Rocklin and Sacramento Auto Repair

A driver called in to the shop the other day saying his European sports sedan had an odd problem.  He was driving when his car started to slow down.  Applying more throttle didn't help.  He pulled over to the side of the road, shut the engine off and waited a few minutes before starting it up again.  It ran fine… for a couple of minutes.  Then the same thing happened.  He was able to finally get home by stopping and restarting, and he was calling to see if we could take a look at it.  Turned out it was one of his car's fuel filters that choked up with debris so badly that enough fuel couldn't get through it.  When he stopped the car, enough fuel could flow through the unpressurized fuel line to supply enough fuel for a couple of minutes when he restarted his car. But then the pressure would cause things to clog again.   There are other symptoms that point to a failing fuel filter. Perhaps your engine misfires, your vehicle is hard to ... read more

We all want to breathe clean air and keep our planet green.  One of the ways to do that is by requiring all vehicles with internal combustion engines to pass an emissions test.  That’s because these vehicles can be big polluters.   Everyone wants their car to pass the test so they can continue their day-to-day driving routine.  But then comes that one day when they tell you your vehicle has failed.  Why does that happen? One of the most common reasons is that your gas cap is leaking or loose (or maybe you don’t even have one on your vehicle!).  The gas cap is supposed to seal in vapors, but sometimes its seals or gaskets dry out or crack. Replace it, and you’re good to go. Another common reason your vehicle failed the test is that your catalytic converter isn’t doing its job. It is supposed to convert toxic gases from your engine into ones that don’t pollute the air.  There are many reasons the catalytic converter may not ... read more

You climb inside your vehicle, start the ignition, and reach for the fan control for the heating or air conditioning.  But when you try to crank it up, no air comes out of the vents. It can make for a very uncomfortable trip, whether it’s hot or cold outside. It’s important for the comfort of you and your passengers to regulate the temperature in your vehicle’s cabin.  Not having air coming through the vents can also be a safety issue when you’re trying to defrost the windshield and front windows when they fog up and your visibility is affected.   There can be many reasons why the air isn’t blowing through your vents.  The blower motor may have failed or the switch that controls it wore out.  It could be as simple as a blown fuse, or perhaps an electrical component that regulates the fan speed may have stopped working. One of the ducts that direct the air from the outside to the cabin may have broken.  Or the air intake where ... read more

You may have heard about an important part of your vehicle's engine called a timing belt, and many know that if that belt breaks, it can cause some very serious engine problems.   Not all vehicles have them, and the ones that do generally have smaller engines.  The timing belt keeps the engine synchronized so that every time a spark plug fires, the crankshaft, camshaft, pistons, and valves are all working together.  Timing belts will eventually have to be replaced, and most vehicle manufacturers recommend when that should be.  Typically, it's around every 60,000-100,000 miles, or 100,000-160,000 km. It's a good idea to stick to your vehicle's schedule or be alert for signs that the timing belt may be failing prematurely. Some of those symptoms? Maybe your engine won't even turn over when you try firing it up. You might hear a ticking or banging sound under the hood.  Perhaps you spot an oil leak or notice the engine misfiring.  If any of those are happenin ... read more

What's the dif? To an automotive technician, it's the differential, a part of your vehicle that helps direct power from the engine to the wheels.  The differential is a gearbox that enables the drive wheels to turn at different speeds (they do that when you turn).   Inside the differential is a fluid that makes sure those gears and other parts are lubricated since there are a lot of metal moving parts in there.  (Your vehicle may have more than one differential in it depending on the drivetrain.)  As you can imagine, it's important that the lubricant in those differentials do its job.  Otherwise, the gears may be damaged by heat and friction. The more you drive your vehicle, the more likely it is for that lubricating fluid to break down. So, it's important to have the differential fluid exchanged every so often.  Your vehicle's manufacturer recommends how often your model should have that done, but a common interval is every 30,000-60,000 miles/50,000 km ... read more

While many components of your vehicle are complex and composed of lots of mechanical and electrical parts, there's one that isn't complicated but still important.  It's your engine air filter. (And, we should point out, the engine air filter isn't to be confused with the cabin air filter.  The cabin air filter cleans air that goes into the passenger compartment while the engine air filter cleans air that goes into the engine itself.) Why does your engine need a filter? Think of all the stuff–dirt, dust, and debris in the air¬–that gets kicked up on the road.  If that were to go unfiltered into your engine, it could damage other components. There are many different materials used in an engine air filter, including paper, cloth (frequently cotton), and other synthetic fabrics.  The material is usually folded tightly to maximize the filtering capability over a relatively small surface.   Before computers were employed to determine the proper mix of ... read more

There's something you can do that helps your tires last longer, wear more evenly and your vehicle handle better.  "Sign me up," you say! Wondering what that is? It's aligning your wheels, and it will literally point you in the right direction when it comes to a better and safer driving experience. When your vehicle was designed, the engineers made sure your tires were all pointing the same way by designing the suspension to make optimal contact with the road. That way the ride is smooth, you don't feel vibrations or shimmying and your vehicle travels in a straight line, without pulling to one side or the other. Unfortunately, your vehicle is not brand new; time and distance take their toll.  After hitting countless bumps, potholes, or the occasional curb, your suspension gets knocked a little out of kilter.  Those precise angles the engineers planned on for your vehicle? They get out of whack Uneven or premature tire wear is one of the first signs your alignment may be o ... read more

Ever wonder how your vehicle is able to move over bumps, potholes and other irregularities in the road and you hardly feel a vibration in the cabin? It’s your shocks and struts doing the hard work along with the rest of your suspension and tires.  They keep the ride smooth and are important for your vehicle’s safe operation.  So, how do you know when your shocks and struts are wearing out? One way is to look at the surface of your tire (where the rubber meets the road—where the tread is).  You might see some little indentations in certain spots, known as tire cupping.  If your vehicle takes longer to stop than it used to, takes a dive when you hit the brake pedal or bottoms out (scrapes) on a big bump in the road, that’s another sign, as are loud, odd noises. You may also notice your vehicle sways more than it used to. Every once in a while, look around at your shocks to see what shape things are in.  If you see the rubber cover cracked ... read more

When you are pointing your vehicle straight down the street, it should go straight.  That’s pretty straightforward, right? Sometimes, though, you may notice you have to keep adjusting the steering wheel to keep going straight.  While that could be caused by many different issues, one possibility is that you have a failing or bent control arm. Another sign is that when you brake, your vehicle pulls to one side or the other.  Sometimes your suspension may sound noisy, especially when you’re traveling on rough surfaces.  A damaged control arm may also make it almost impossible for you to get a good wheel alignment.  The control arms are part of your suspension, and some vehicles have upper control arms and lower control arms.  Not all have the same number of control arms, but one thing is important: If you have worn bushings on your control arms or a worn-out ball joint, the control arm on the other side should also be replaced.  The rubber b ... read more

Steering a vehicle these days doesn't take much effort, but if you got behind the wheel back before power steering was invented, you'd need to practically have the strength of Hercules to turn the wheel.    The first power steering systems widely available changed everything.  Chrysler introduced its Hydraguide power system in 1951. The "hydra" was for a hydraulic pump. It pressurized fluid that multiplied the force applied to the steering wheel so it was easier to turn the wheels on the ground. That pump got power from a belt attached to the engine, but unfortunately it wasted a lot of energy in the process. Plus, the system of hoses and pumps required a fair amount of maintenance and repair. Some say this system provides the most "natural" steering experience of power systems. Recently, automakers have turned to electric power steering.  It gets its power from the car's electrical battery and charging system and uses an electric motor to turn the wheels.  Sin ... read more