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At Protrans, we are a full-service repair shop. We are a shop that is approved by both the Automotive Service Councils of California, and the Automotive Club of Southern California. Some of featured repairs we perform at Protrans include:


When an issue arises with your anti-lock brake system (ABS), a corresponding light will illuminate on your dashboard. This system is important to your vehicle because it keeps your car from skidding in an out-of-control fashion when you hit the brakes. It is an automated safety system that recognizes when your wheels stop rotating and releases brake fluid pressure, allowing the wheels to continue to rotate. This stops your car from locking up and skidding uncontrollably, and returns the control of the vehicle to you.

Like most systems in your vehicle, your ABS can malfunction, and you’ll want to resolve the issue as soon as it does.

Common reasons why this may happen:

  • Faulty Wheel Speed Sensor
  • Unresponsive Hydraulic Pump or Valve
  • Faulty ABS Module
  • Low Fluid Levels

ABS relies on fluid to help regulate pressure. If the ABS fluid reservoir is low, or if there is too much air in the system, then the ABS will not be able to do its job properly.


The air conditioning unit in your vehicle operates similarly to a refrigerator. Your vehicle’s air conditioning unit is designed to move heat from the inside of your car to outside of it.

Your vehicle’s air conditioning unit has six major components:

The refrigerant carries heat. In modern cars, refrigerant is a substance called R-134a. Older cars’ refrigerant is called r-12 freon, which is more expensive and difficult to find than R-134a.

The compressor circulates and compresses refrigerant within the vehicle’s cooling system.

Your vehicle’s condenser changes the refrigerant from gas to liquid and expels heat from the car.

The expansion valve (sometimes called the orifice tube) is a nozzle that simultaneously drops the pressure of the refrigerant liquid, meter its flow and atomize it.

Your vehicle’s evaporator transfers heat to the refrigerant from the air blown across it, cooling your car.

The receiver or dryer filters your vehicle’s refrigerant and oil, removing moisture and other contaminants from them.

When you start your vehicle’s air conditioning system, the compressor works by putting the refrigerant under pressure, sending it to the condensing coils, which are generally in front of your vehicle’s radiator. The condenser expels hot air to outside the car, cooling the air within the vehicle. When this happens, the refrigerant is cooled, and it changes form a gas to a liquid, which then passes through the expansion valve and to the evaporator.

Once the evaporator receives the liquid-state refrigerant, it loses pressure and cools the remaining liquid. The vehicle’s blower moves air across the evaporator and into the vehicle’s interior. If you keep your air conditioning unit turned on, the refrigerant goes through this cycle continuously.

If any of these components is damaged, it can turn your cool car into a furnace during the summer months. Your vehicle’s air conditioning issue could be as simple as topping off refrigerant to replacing a valve. When your air conditioning unit is not working as it should, bring your vehicle to Protrans Automotive. One of our trained air conditioning specialists will inspect your car’s air conditioner, all lines, the evaporator and the compressor for leaks and wear.


A clean air filter results will improve your gas mileage, give you better acceleration, increased the life of your engine, and provide improved engine performance. The air filter cleans the air entering the engine, and it also prevents debris from entering the engine, which can harm the engine.

As an air filter becomes dirty, its ability to filter the air going into the engine is reduced. Because of this, the engine will not function properly, which may cause drivability issues. Examining and replacing the air filter, as indicated by the manufacturer's is important.

Symptoms of a dirty air filter may vary, but you will likely experience a noticeable decrease in gas mileage. Other problems may be ignition problems cause by contaminated spark plugs. A dirty air filter prevents the necessary volume of clean air from reaching the engine. Eventually as this continues, you will end up with a rich fuel mixture, which increases engine deposits and this can lead to the service engine soon light coming on. So don’t delay a moment longer, bring your vehicle to Protrans Automotive today.


A properly aligned car has wheels that drive straight, and no additional effort is needed to keep them that way. If your wheels are out of alignment, you’re looking at a potentially costly problem, not to mention a safety issue. It’s time for a car alignment test.

Here’s all you need to know to see whether you need a tire alignment, learn how to fix your wheels and avoid future problems.

Signs You Need a Tire Alignment

Some signs you need to have your tires aligned become evident as you drive. For instance, if the steering wheel pulls slightly to the left or to the right while you’re driving, or the steering wheel is off center when you’re driving straight, a tire alignment may be necessary. Be mindful, though: Those symptoms can also be the sign of an under-inflated tire. Troubleshoot by verifying tire pressure at all four corners and re-inflating your tires, if necessary. If the problem persists, that’s a good sign of a tire alignment issue. Look at your tires to perform a car alignment test at home.

Additionally, if you sense steering wheel vibration even when you’re driving on a smooth road, then you need to perform an alignment check.

Other signs of a tire alignment issue become evident when the car is parked, such as visibly uneven tread wear on your tires. Examples of uneven tread wear include greater wear on one side of the tire or diagonal wear. And if the tread wear indicators or “wear bars” are exposed, then that tire no longer has enough grip to safely bring your vehicle to a stop. It should immediately be replaced. Perform the alignment at this time, too.

DIY Tests: Camber, Toe and Caster

There are three car alignment tests you can conduct yourself. If you’re not 100 percent confident in your determination, come into Protrans and we will run a battery of alignment tests for you.

Besides signs of tire wear, you can spot problems by observing how the tires are aligned when viewed from the front of the vehicle. When you’re looking directly at that car from that angle, you’re observing the camber, which is the inward or outward angle of the tire when seen straight on. Properly aligned tires are absolutely straight; tires aligned inward have a negative camber, and tires aligned outward have a positive camber.

The toe alignment is a second test. Look straight down at the tires. Tires angled inward represent a toe-in alignment; tires angled outward represent a toe-out alignment. In both cases, the wheels need to be aligned.

A third check for misalignment can be done by viewing tires from the side. A vehicle’s caster angle helps balance steering, stability and cornering. This car alignment test is harder to perform, but when the problem is present, the steering axis will either tilt toward the driver (positive caster) or toward the front of your vehicle (negative caster).

How to Avoid Future Problems

There is no guarantee that you’ll never have to re-align your tires again, but there are steps you can take to maintain your vehicle’s proper alignment once it’s been fixed. The best offense is a good defense: Skirt potholes or slow down as you cross over them. Avoid turning corners too tightly or backing into curbs. Keeping on top of potential warning signs and learning to follow up with a thorough tire alignment examination is the best way to protect your vehicle in the long haul.


Not all vehicles come standard with air suspension, so it’s best to check your owner’s manual, or come in and see us at Protrans. Air suspension offers several important benefits that may be useful to drivers interested in luxury cars. The primary benefit is ride quality: Vehicles with air suspension are often said to "glide" over bumps, while traditional steel spring suspension can cause a harsher ride. Also, air suspension is often adjustable. That means drivers can select a cushy ride if they're on a rough road or a harsh ride if they want to improve handling.

Another big benefit is that SUVs or trucks with the feature boast improved towing capabilities. In most of these SUVs or trucks, drivers can increase firmness when towing to account for heavier loads. That's not true of SUVs or trucks with spring suspension, where large loads can weigh down the vehicle. So when your ride doesn’t feel as comfortable as it once was, just bring it in to Protrans, and we’ll check it out for you.


Your vehicle’s axles are vital to keeping you safe on the road. They are just as important as other safety devices on your vehicle, such as brakes and tires. Axles bear all of your vehicle’s weight. They connect its wheels and help drive the vehicle. In most cars, the axles are an essential part of the steering system, working with power steering fluid and other components to ensure smooth turning.

When most people think of the word axle, they imagine a bar between two wheels, as seen on wagons or train cars. Most axles, however, are more complex, and they require the eyes and expertise of someone like the team at Protrans Automotive to inspect and repair them.

Most of today’s vehicles are built using split axles, which means the wheel on each side of the axle is attached to a separate shaft. Split axles allow independent suspension of the left and right wheels, which allows for a smoother ride. These modern designs also permit the left and right wheels to rotate at different speeds as the vehicle turns. By allowing each side to rotate at different speeds, the split axle improves traction and extends tire life, saving you money in the long run. This particular component is called the differential.

The axle is connected to the wheel by a component called the CV joint. The CV joint boot is a protective flexible covering which covers the joint. If this boot becomes damaged, it can cause brake fluid to leak out, which can cause serious problems.

If your vehicle is not turning as smoothly as usual or you are having problems stopping your car, you might need an axle repair. Bring your vehicle to Protrans Automotive today so our team of experts can inspect and fix your vehicle’s axles. If your vehicle’s axles need to be replaced, we can install them for you so you can get back on the road quickly.


Your vehicle’s battery is the source of electrical currents necessary to start the engine. The battery provides power to your vehicle’s accessories and electrical parts; it allows them to operate even when your vehicle’s engine is not running. Additionally, components such as your engine and starter rely on the battery for power; they cannot run without a properly functioning battery. Your battery is your vehicle’s voltage stabilizer for the entire electrical system.

Most vehicle batteries need to be replaced every few years, depending on the conditions in which you drive. Extreme weather, continued use of vehicle accessories and other conditions can lead to shorter battery life. Over time, your battery loses juice, and you may need to occasionally jump-start your vehicle in order to get it running. If your vehicle is showing signs of lessened battery life, such as delayed start time, you may need to get your battery replaced.

If your battery dies before you replace it, you might be stranded without a vehicle. The expert team at Protrans Automotive can examine, diagnose and replace your battery as needed. You can trust us at Protrans Automotive to service your battery and, if necessary, help you find and install the perfect new battery for your vehicle.


Checking your belts and hoses will save you time in the long run. Belts and hoses have changed over the years; the serpentine belts which are a large, long belt that drives all of the accessories on the front of the engine. Well, they’re big, they’re wide, and they’re expensive.

Now, the second thing is that these parts are all covered in cosmetic; and that’s the key, cosmetic rubber. Because the parts that do the work are underneath the rubber that you can see. There are fabric reinforcement layers under the rubber in a belt or a hose under the hood of your car. The fabric will wear out over time and weaken, and when it weakens, you can be in trouble. See, on a hose, for instance, this hose right here looks pretty good till we look up here and we see that it has had a catastrophic failure which can have a chain effect ruining your engine.

Typically, you will need to replace the belts or hoses based on mileage – 5 years or 75,000 miles, whichever comes first. Now, here’s where you might be in for a bit of a shock – a lot of these newer belts and hoses, they’re complex assemblies, and they are expensive. Ok, that’s a consideration, but, remember that belts and hoses are never as expensive as the engine they’re going to damage when they fail. So don’t delay and risk costly engine damage, bring your vehicle to Protrans Automotive today.


There are several braking issues that can indicate your vehicle needs brake repair work.

Get a brake service inspection if:

  • The brake pedal seems to be spongy or presses farther to the floor than usual
  • Your vehicle pulls to the right or left when you brake
  • Unusual noises or vibrations occur during braking

Many brake pads today have a built-in metal component that creates a slight squeal. The squeal increases in volume over time to alert you of the need for service. If you begin to hear a loud squeal, make sure to bring your vehicle to Protrans for an inspection.


Brake pad replacement is the most common repair job for automotive brake systems. The reason is simple: brakes are designed to wear out. The pads rub on the brake disk to stop your car, so worn pads are the first part to check if you are experiencing any braking problems.

Assuming that you have the proper tools, the two most difficult aspects of brake pad replacement are the heavy weight of the caliper and the pistons. Without proper tools, adjusting the piston and calipers to fit over the new, thicker pads can be very difficult.

Since brake pads are only one possible problem with a brake system, there are other items to check as well. If the pads are worn thin or are cracked from heat during use, pad replacement may be necessary and the system should be inspected. So don’t risk your life, bring your vehicle to Protrans Automotive today, and we will check out complete system.


The suspension system is part of the chassis, which contains all the important systems located underneath the body of a vehicle. The three main components of a suspension system are springs, dampers/shock absorbers and anti-sway bars. The exact configuration depends on the make, model, and year of the vehicle provides a detailed overview of various types of suspensions -- front, rear, dependent, independent.

Typically, both sides of a suspension system should be replaced at the same time, and depending on the wear and tear, often the front and rear systems should be done together, to avoid having new parts add to the stress of old, worn parts. Sometimes individual parts, such as the shock absorbers or ball joints, may wear out and need replacing separately. Need help? Head to Protrans Automotive today.


At Protrans, we want to offer you an easy-to-use tool to troubleshoot why your check engine light is on. When your check engine light is lit, it may be indicating a simple problem that’s easy to fix – such as a loose gas cap. Or, it could be a warning of a more serious problem that could damage your engine components.andnbsp;Finding out why your light is on now can save you money and trouble down the road, so don’t delay, head to Protrans today.


Today’s autos use computers to provide exacting climate control. A combination of heating and air conditioning are standard in most vehicles for temperature control. Fan speed and air circulation are also controlled through the climate control system. High-end vehicles feature extra climate control components, such as humidity controls and clean-air systems with integrated high-efficiency air filters and ionizing air cleaners. Car climate control systems require regular maintenance to function properly, so if something feels off with your system, just head to Protrans, and we’ll check it out for you.


What exactly does this test do?

When you take your car in for service, for most vehicles, the mechanic will use a diagnostic tool to see if there are any recorded problems. He does this using diagnostic software which accesses the car’s reporting and computer system where any problems are monitored and faults are logged. Performing a car diagnostic test can reveal a range of problems associated with the car’s transmission, oil tank, exhaust system, and various other components of the car, truck, or suv. Most modern cars now come with computer processors, microchips, and sensors which can be linked to a car diagnostic computer scanner.

At Protrans we can use diagnostics for all makes and models.

Which areas of a vehicle are covered by a Car Diagnostic Test?

The car diagnostics software we use at Protrans can typically tell you about the following areas for most vehicles – ignition timing problems, issues with the vehicle’s engine, the performance of the fuel injector, firing of the ignition coils, engine rpm levels, air and coolant temperature, crankshaft and camshaft position and throttle opening. This means that any car auto repair items can then be identified and corrected if necessary.


If your car runs hot, you may need to have your cooling system services. The most important and effective way to ensure your cooling system stays in top shape is to make sure the system is clean. Here at Protrans Automotive, we can clean your cooling system to help it run cool.

Over time, your vehicle’s radiator can build solid deposits which can result in clogged pipes and lines within the cooling system. A quick radiator flush at Protrans Automotive can solve this problem and keep your cooling system in shape.

Another component within your cooling system is antifreeze. It is important to remember to change your antifreeze seasonally. The experts at Protrans Automotive can help you change your antifreeze to ensure your vehicle’s system does not freeze up with cold weather strikes.

If a problem with your cooling system extends beyond a simple flush or replacement, our team can diagnose the problem. We can perform a pressure test to determine if your radiator’s pressure is correct. If the pressure test determines that it is not correct, we will check your cooling system’s caps, hoses and connections to determine if any of these components need to be replaced or repaired. If we determine that they do need to be replaced or repaired, we can give you a fair, honest quote on parts and labor.

From simple pressure tests to full radiator replacements, you can trust the team at Protrans Automotive for excellent cooling system service.


The clutch’s job is helping your engine and transmission with in sync. Since your engine is always running, even when your wheels aren’t turning, your clutch has to be able to both link and separate. While automatic transmissions have much more clutches, they still have the same basic parts doing the same basic job.

When the clutch is engaged, then the clutch disc is forced against the flywheel by powerful springs. Friction between the two parts forms a solid connection and the engine’s motion is transmitted to the transmission. Depressing the clutch pedal causes the springs holding the clutch disc against the flywheel to relax. Without being held in place, the clutch disc loses contact and stops spinning, and breaks this linkage.

Like most parts of your car, the clutch is designed for maximum durability. The friction between the clutch plate and the flywheel will wear the plate down over time. If the power train is subjected to heavy strains on a regular basis, the clutch may wear out in as little as 35,000 miles. Virtually all clutches should be good for at least 50,000 miles in normal operation. Newer cars perform even better, and clutches that are good for 80,000 or even 100,000 miles are relatively common today. Consult your owner’s manual to find your manufacturer’s recommendations on your clutch’s lifespan, or simply head to Protrans Automotive, and we’ll help you keep your clutch in tip top shape, or replace it before it stops functioning.


When you take a corner in your car, the outside wheels have a slightly longer distance to go than the inside wheels. That means that the outside wheels have to turn a bit faster than the inside. The machinery that makes this possible is called the differential.

The differential allows the drive wheels to rotate at different speeds in turns without the wheel binding or hopping. If you have a rear-wheel drive vehicle, the differential is on the rear axle. The bulge in the middle of the axle is the differential.

If you have a front-wheel drive vehicle, the differential function is handled by your transaxle. Of course, all-wheel drive vehicles have differentials on both axles. They also have a center differential or a transfer case between the front and rear axles to compensate for speed differences between the front and rear.

Because all the power of the engine is transferred through the various differentials, you can imagine that they are very strong and are built last a long time. That's why it's important to keep your differential properly lubricated. Differential fluid cools and protects the gears.

Your service technician at Protrans will check differential fluid level and top it off if necessary. With low fluid, the differential will run too hot and wear prematurely. Ask your service advisor for when it's recommended to change your differential fluid. Fresh fluid will extend the life of your differential. Your technician will also inspect the u-joints which connect your drive shaft to the differential and may recommend service. Some u-joints can be lubricated as part of a routine lube, oil and filter change as well.

Your differential will eventually wear out and need to be replaced. You might notice a strange noise from your axle area as one of the first warning signs. When the differential shows signs of failing, it's important to repair it. If you leave it too long and it freezes up when you're driving, you could lose control of your vehicle and other parts like the axle, driveshaft, and transmission could be damaged. Don’t risk an accident, the ASE certified mechanics at Protrans Automotive can help you.


The best way to prevent long-term and costly problems with your vehicle is to keep up with its preventative maintenance schedule. One major key to successfully making sure you are doing all you need to do is to read your vehicle’s owner’s manual. Regardless of your vehicle’s make or model, its owner’s manual will contain a maintenance schedule. Every make and model is different, and standby beliefs such as “You have to change your oil every 3,000 miles,” may not apply to your car.

The maintenance schedule within your owner’s manual is provided by the people who understand your vehicle the best—the company that built it. The manufacturer provides suggestions for how often you need to change your oil, filters, driving belts, timing belts and more.

While some preventative maintenance—such as topping off fluids—can be performed by the vehicle’s owner, other, more complicated procedures should be done by experts like the team at Protrans Automotive. Our team can keep your vehicle in top shape by performing the following maintenance:

Inspecting and replacing timing belts (preventing damage to other accessories)

Inspecting and replacing serpentine belts (preventing damage to other accessories)

Checking and changing oil

Checking, repairing and replacing battery connection components

Checking and replacing batteries

Checking and replacing cabin air filters This can keep your car comfortable during the hot summer months.

Checking and replacing your engine air filter

You may need to replace your engine air filter more frequently if you drive in stop-and-go traffic or have a long commute.

Checking and replacing spark plugs

Tire rotation

This helps ensure even wear on your tires, which can help prevent blowouts and leaking. It also helps make your ride smoother.

Tire balancing

Balancing your tires prevents wear, which can significantly improve their life and save you money.

Wheel alignment

By following your vehicle’s owner’s manual and having your vehicle inspected and maintained regularly, you can greatly reduce problems and save money in the long run. Let the expert team at Protrans Automotive help your vehicle stay in good condition.


Diesel engines are common in fleet vehicles, semi-trucks and pickup trucks. With the rising price of traditional gasoline, diesel is also becoming a more popular choice for family vehicles. Our shop provides service for diesel engines of all sizes. The experts at Protrans Automotive use the latest diagnostic tools to ensure your diesel engine is running as it should.

Diesel engines are exceptionally reliable, but they do need regular maintenance in order to stay in top condition. You must keep your diesel engine’s oil and filters changed at regular, scheduled intervals. Because diesel engines do not have electrical ignition parts such as plugs and wires, there are fewer components within the vehicle that need to be maintained. Still, you do need to make sure that the regular maintenance that does need to be performed on your diesel vehicle is done by a shop that understands and is experienced in working with diesel engines.

Problems such as leaky gaskets, cooling system issues, overheating, air and oil filtration issues, fuel system restrictions, dirty injectors, piston scoring, faulty injection timers and hard starting can be solved by bringing your diesel vehicle to the knowledgeable and experienced team at Protrans Automotive.


A gasoline engine with proper maintenance throughout its life can last to well over 300,000 miles, and all makes and models have differences that vary. A diesel engine can do even better at more than 500,000 miles with regular care. Here are some maintenance issues that impact the life of an engine:

  • Using synthetic oil will help lengthen the life of an engine.
  • Changing the oil regularly extends the engine life.
  • Replacing the air filter when it gets dirty will extend the life of the engine.

The material of the engine affects its life with iron-block engines being more durable than aluminum because it can handle the heat. How the vehicle is used impacts the engine life as well. Towing heavy loads, heavy acceleration patterns, excessive revving and driving at high speeds reduces the lifespan of the engine.

To ensure an engine lasts as long as possible, it requires regular care. You should also pay attention to what your engine is telling you if dashboard lights come on or you notice performance is off. Consult a mechanic at Protrans right away to prevent major damage.


Is your car or truck showing signs of electrical problems such as in-dash lighting dimming, radio fading, or windows not properly going up or down? Stop in at Protrans today for a quick and trusted diagnosis of your vehicle’s electrical issue.


Clean air is enjoyable for everyone. Many large cities now require vehicles to undergo emissions testing in order to minimize air pollution in and around metropolitan areas. If your vehicle fails the emissions test, you cannot complete your annual vehicle registration.

Emissions tests minimize harmful pollutants in the air. With nearly 30 million Americans currently diagnosed with asthma, it is even more important to do all we can to keep air clean. By reducing harmful toxins in the air, we protect everyone.

Here at Protrans Automotive, we not only perform emissions tests, but we can provide repairs if you fail the test. We are your one-stop shop for emissions testing and repairs. Come by our friendly shop at Protrans today, and we can ensure your vehicle will not only be safe to drive but more environmentally friendly.


If you live in a larger city, you may be subject to emissions testing. If you fail your emissions test, you may need to get your exhaust system repaired or replaced. The team at Protrans Automotive can diagnose and repair your exhaust system and help you pass your emissions test.

While your exhaust system helps reduce noise output from your vehicle, it also significantly reduces harmful emissions from being released into the air. When your muffler and exhaust system functions properly, it significantly reduces your vehicle’s harmful impact on the environment. It also significantly improves the functionality of your vehicle.

Your vehicle’s exhaust system involves several components. The exhaust manifolds right behind the engine collect exhaust gases and connect to cylinder heads. Gases collected by your vehicle’s exhaust manifolds are analyzed by oxygen sensors and refined by catalytic converters before being muffled by the mufflers. By the time these gases reach the muffler, the emissions system has made your car run smoother, quieter and cleaner.

If any of the components of your vehicle’s exhaust system fail, your gas mileage and quality of air around you can be affected. The expert team at Protrans Automotive can inspect and repair your entire exhaust system to ensure your vehicle is running cleanly.


Almost all of the quality parts we use to complete the repairs on your car, truck, or suv come with a standard warranty, so be sure to ask us it when you next have us service your vehicle at Protrans Automotive.


With Protrans, there is never a need to head to the costly dealership. Our, well-trained ASE technicians can handle all the required factory scheduled maintenance that you import or domestic vehicle requires. We would be happy to help you by setting up reminders. Inquire about this service from the at Protrans Automotive team today.


From ambulances to trucks, fleets come in all shapes and sizes. No matter the type of vehicle or the size of your fleet, the experts at Protrans Automotive can provide service to most fleet vehicles. Yearly inspections, maintenance and tune-ups are all key to keeping your fleet and business on the road.

If one of your fleet vehicles breaks down, the team at Protrans Automotive makes it our priority to get it back on the road quickly. We provide accurate time estimates so you can know in advance if you need to make arrangements for your fleet. Additionally, with our fleet account program, we can keep track of maintenance for your vehicles to prevent any major repairs.

If you own a fleet and are looking for a friendly, responsible and experienced team, call Protrans Automotive to schedule your fleet appointment.


From your radiator, to topping off your brake fluid and other vital parts in your vehicle to keep it running properly without overheating or worse, head to Protrans. We can even help you determine if it’s okay to just fill up your fluids to the max line, or if you need a complete flush before we replace your vehicle’s fluids. Call Protrans Automotive to schedule your checkup.


Over time, deposits build up on intake valves, injectors, ports, fuel injectors and combustion chambers within your vehicle. These build-ups can cause loss of power, shaky idling, hesitation, hard starting, misfire, pinging and knocking noises and, perhaps worst of all, poor gas mileage.

Our team of experts uses specialized fuel system and air induction cleaners and conditioners to clean your vehicle’s fuel injectors, throttle body, intake valves, ports and air intake. These cleaners and conditioners remove harmful combustion chamber deposits from all these components, allowing your engine to run more smoothly. By cleaning the induction system thoroughly with specialized equipment and conditioners and cleaners, our team can make your vehicle run more efficiently.

The quality of the gasoline you put into your vehicle can vary greatly. When the gasoline is of poor quality, it can cause deposit buildup. Modern vehicles—especially those with gasoline direct injection—are particularly sensitive to deposits that build up in fuel injectors, intake valves and ports. Using specialized equipment, our technicians will quickly and effectively clean the intake manifold, ports, intake valves and combustion chamber and install injector cleaning additives in your vehicle’s tank. This service will restore lost power and performance and will reduce harmful exhaust emissions. Protrans Automotive would be happy to schedule your fuel system checkup today.


Correct headlight alignment is extremely important for your vehicle’s safety. Properly aligned headlights not only light up the road, they help illuminate road signs and any animals that might jump out onto the road. Driving with misaligned lights is dangerous, and they should be adjusted as soon as possible.

From time to time your headlights will need to be adjusted. In most cases, headlights simply slip out of adjustment over time. In fact, most headlights will need to be adjusted every few years. Here are a couple of reasons your headlights may be pointed at the sky:

One of the most common reasons that headlights are not shining on the road or are blinding oncoming drivers is due to excess weight in the trunk or cargo area. This will push down the rear of the vehicle enough to tilt the front of it up, along with the light beams.

On the other hand, worn shocks can lead to headlights that are aimed too high. As shocks wear out they sag and if it is the rear shocks that are sagging, the front end of the car will be pointed higher than normal, throwing off the headlights. While adjusting the headlights will fix this problem, replacing the shocks is the better option.

Another issue could be if someone has hit the front end of your car, then it is possible the headlights will be knocked of alignment, but there will not be any visible damage to your vehicle. Protrans Automotive can help you with any headlight alignment problem.


When you come to Protrans for any service, or if you feel something is off with your vehicle, we would be happy to do a checkup for your vehicle. During this inspection, we will examine your tires, fluid levels, belts, lights, wipers, battery hoses and more. Our goal is to help you keep your car in prime shape. When you take care of your vehicle, it runs better and lasts longer and our ASE certified auto technicians at Protrans Automotive will help you watch out for anything that needs to be fixed.


You know you should change your oil at regularly, but what is a really considered a reasonable amount of time between oil changes? Well, the only way to avoid running on oil that's so dirty that it’s detrimental to the health of your engine, you need to keep a record of when it was last changed and change it frequently, and it might shock you how often you may need to change it. It could be every 1,000 miles in extreme operating conditions. By changing your oil frequently, you may get twice the mileage out of your engine.

Extreme operating conditions entail stop-and-go driving in city or rush-hour traffic, lots of short trips daily, leaving the car parked long enough to have your engine cool down. Other extreme conditions are if you drive in very hot weather, or in areas with a lot of dust or dirt. Moreover, it’s hard on your engine if you tow or haul heavy loads all the time. In any of these circumstances, change the oil as often as every 1,000 to 3,000 miles on older vehicles. On new vehicles, follow the manufacturers' recommendations for extreme use. If you are a customer of ours at Protrans Automotive we will help you remember when it’s time for an oil change and a tire rotation.


The power steering system allows you the ability to turn the steering wheel easily. The power steering system includes: power steering pump, fluid, belt, hoses, and steering gear. When something is going wrong with your power steering, turning will become more difficult, so head to Protrans and we will help you determine what has gone wrong.

There are a few things to keep in mind when you are having difficulty steering your vehicle. For instance, if the power steering pump is leaking, the steering will become harder to turn. You will see power steering fluid underneath your car.

When the power steering pump is replaced, the power steering belt and hoses should be inspected as well. At Protrans our ASE certified mechanics always flush the power steering fluid when replacing the pump, and then we add the specific power steering fluid that your particular model requires.

Our recommendation is to change the steering fluid on a regular basis so that it can prolong the life of the power steering pump.


Your vehicle’s radiator helps keep your engine cool. Overheated engines can lead to numerous problems, including eventual breakdowns. Your vehicle’ radiator sits at the front of the engine bay; it’s made up of slim, hollow channels that run between the inlet and outlet tanks. Coolant pumps through tubes to the engine, where it is warmed. Once the coolant reaches the engine, it goes to the radiator, which is constructed to cool the flowing liquid using the air passing the radiator. The cooled liquid cycles back through the engine, where it absorbs more heat. This cycle allows the engine to keep working at ideal temperatures.

If your vehicle overheats, you may need to have your radiator serviced or replaced. An elevated temperature gauge is another sign that your radiator might be malfunctioning. Puddles of green, yellow or orange coolant under your car could indicate that there is a radiator leak, which could be caused by corrosion. If you notice any of these signs that your radiator needs to be serviced or replaced, bring your vehicle to Protrans Automotive. Our team of experts can fix leaks or replace your radiator so you can get back on the road worry-free.


In the state of California, vehicles must undergo a biennial smog inspection in order to renew your registration. New residents to California will be required to have an initial inspection to register, even if you have a current certificate from your previous state. Testing can be completed at DMV-approved locations throughout your county. Safety inspections are not generally required for registration or renewal.

In California, vehicles are required to be smog checked every 2 years. When your stickers are about to expire, head to Protrans for an inspection check.


On average in most vehicles, by the time you have 50,000 miles the original shocks and struts may be worn to the point of needing replacing, but it all depends on your particular vehicle and your typical driving conditions.

One indicator of struts needs replacement is changes in your vehicle’s handling. If you experience a generally bumpy or shaky ride, have poor steering response, stiffness or noise when steering, have instability when braking it is probably time for new struts and shocks.

Another sign it is time to replace your shocks and struts is by examining your vehicle for signs of problems. If you see noticeable fluid leaks or if the shocks, struts, or mounts look dented or damaged, it just may be time to replace them. So before it gets any worse, bring your vehicle into Protrans Automotive.


A vehicle's suspension system is often easily neglected. However, after supporting the structure of your car year after year, eventually the shocks will wear out and suspension repair will be necessary. Some people mistakenly believe the suspension is mainly about having a smooth ride, and therefore these repairs aren't as important as other maintenance issues. However, having a bad suspension can greatly affect your ability to control the vehicle, especially when stopping or turning, so it's in your best interest not to ignore this part of auto maintenance.

How do you know when it's time for suspension repair? The experts at Protrans want you to watch for these indicators.

  • Your vehicle is riding roughly
  • Your vehicle drifts or pulling during turns
  • Your car dips or when stopping
  • The tire treads have become uneven
  • Your shocks look greasy or oily
  • For expert auto repair for complete suspension repairs just head to Protrans.


If you drive a newer vehicle, you probably have a Tire Pressure Monitoring System (TPMS) installed. TPMS is an electronic system inside the tire that monitors the air pressure in your tires. If your tires are under or over inflated, the TPMS activates a warning light on your dash. When the light is steady, it means you need to have your tire pressure checked. When the light is flashing, it means you need to have your TPMS checked.

Most vehicles that are 2008 or newer come standard with a TPMS, which includes sensors mounted in the valve stem of each tire to continuously measure the pressure levels, and then alert drivers when severe under, or over inflation is detected. If you are experiencing problems with your TPMS just call or schedule an appointment with Protrans today.


When you have your oil changed, you should get into the habit of rotating your tires.andnbsp; At least once a year you should be rotating your tires about 10,000 miles annually.

Most vehicle manufacturers recommend that the tires be rotated on the same schedule as oil changes. Typically, unless you drive fewer than about 7,500 miles per year, you should probably rotate tires every six months or so.

Here at Protrans, we suggest you follow the recommended schedule outlined in your owner's manual, but rotate the tires (and change the oil) at least once a year.


Using the latest in state-of-the-art technology, we will install a safe and effective cleaner to suspend harmful varnish and sludge from the transmission valve body, torque converter and lines and install new high-tech fluid with conditioners.

Just like your engine, you should have your transmission serviced regularly. When Protrans Automotive services your transmission, we:

  • Remove and inspect the pan
  • Clean or replace the screen
  • Clean the pan
  • Reinstall the pan
  • Install a new gasket
  • Replace old transmission fluid with new, high quality fluid
  • Make any additional needed changes and adjustments

By replacing the old transmission fluid, the expert team at Protrans Automotive essentially gives your vehicle’s transmission new life. The new fluid restores your clutch’s holding power. This reduces slip and heat production. Additionally, flushing the old fluid gets rid of small bits of clutch material and metal shavings, which can damage your transmission by clogging passages and wedging themselves between moving parts. Getting rid of the old fluid reduces wear within the transmission.

Replacing old fluid with new also provides better lubrication within the transmission, which boosts the holding ability of the transmission’s friction components. Improved lubrication also results in less heat. By decreasing friction and heat, your transmission will work better for a longer amount of time. A simple service can save you the money and time that come with a major transmission repair or replacement.


Need a transmission repair in Riverside? You’ve come to the right place!

Rebuilt Transmissions

In our complete overhaul, the transmission is removed from the vehicle and completely disassembled with the parts laid on our workbench. Each part is inspected for wear and damage and then either cleaned in a special solution, or replaced with another part depending on its condition. Parts that have friction surfaces, such as bands, clutches, seals and gaskets are replaced as well as the torque converter. Technical service bulletins are checked to see if the auto manufacturer recommends any modifications to correct design defects that may have been discovered after the transmission was built.

Transmission Leaking

Having the proper amount of transmission fluid is essential to the normal operation of the transmission. The transmission fluid has three mail purposes. It transmits power, acts as a heat exchanger and lubricates. A transmission that is leaking can have an adverse effect on any or all of these functions. So, as soon as you detect a leak, it is important that you have the vehicle inspected to determine the source of the leak.

Reseal Job

A transmission is resealed in order to repair external transmission fluid leaks. If you see spots of red oil on the ground under the care, your transmission may be a candidate for a re-seal job. In order to check a transmission for leaks, a technician will put the car on a lift and examine the unit for signs of oil leaks. If a leak is spotted at any of the external seals or gaskets and the transmission otherwise performs well, the technician will most likely recommend that the transmission be re-sealed. Most of the external seals can be replaced while the transmission is still in the car, but if the front seal must be replaced, the transmission must first be removed from the vehicle in order to gain access to it.

Erratic Shifting

Erratic shifting is a common symptom that we see at Protrans Automotive and Transmission Specialists. Before transmissions became so complex, evaluating a vehicle with erratic shifting was a simple process. However, with the introduction of electronics, it requires the expertise of a trained and qualified technician. With a proper diagnosis, we can properly evaluate your transmission.


A tune-up is a major service that includes an oil change, replacement of an engine air filter, spark plugs and sometimes additional items.

Spark plugs provide an electric spark to initiate combustion in your engine, so if the spark plugs are fouled-up or worn out, your engine won’t run properly. There are two types of spark plugs: conventional and long-life (platinum- or iridium-tipped). Conventional spark plugs need to be replaced every 30,000-50,000 miles. Iridium- or platinum-tipped spark plugs can last for 50,000-120,000 miles, it just depends on your particular vehicles make and model as well as the age of the vehicle. When it’s time for a tune up, the Protrans Automotive we will help determine when it’s time for a tune up.


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