Rocklin and Sacramento Auto Repair

If you have a vehicle with an automatic transmission, you probably never think about gear shifting.  When motor vehicles were invented, all of them had to be shifted manually.  But that wonderful self-shifting transmission, referred to these days as simply an “automatic,” changed everything. Automatic transmissions have a lot of moving parts, and they are bathed in a fluid that keeps them lubricated and cool. That fluid also is vital to the whole gear shifting process.  As you might imagine, the longer that fluid does its job, the more chance it has to pick up some contaminants.  Sometimes a leak will spring up in an automatic transmission.  Dirty transmission fluid or not enough of it will both create problems. It may cause your Check Engine light to come on, or your transmission may run rough and make strange noises. The best strategy is not to let it get to this point.  That means you should have your transmission fluid replaced at regular i ... read more

When you turn on the air conditioning in your vehicle, you expect cool air to come out of the vents.  You depend on it, especially in hot weather, but it can also be important in humid weather when you need it to help defrost your windows and windshield. The air conditioning system has a lot of parts to it.  It has fans and blowers to move the air through the vents into the cabin.  It has parts that take hot air and cool it off. An electrical problem can be as simple as a broken switch or a broken blower motor. The air may not be getting cool because a hose in the system is broken or the refrigerant has leaked out.  Two major components are the compressor and the condenser.  The compressor pressurizes the refrigerant, one step in the air conditioning process.  The condenser takes that hot refrigerant and cools it down. It also reduces the pressure. Because the climate control system in your vehicle is so complex, it’s best to leave the diagnosis to a ... read more

If you’ve noticed your vehicle’s ride has lately been bumpy or you’re hearing strange noises when you drive over bumps, you may need new struts.   The strut assembly is part of your vehicle’s suspension system that’s used to absorb the irregularities on the surfaces you drive on. You have probably heard of shocks or shock absorbers.  A shock is a piston with gas or liquid inside.  When you hit a bump, that shock absorbs the blow. Struts are similar to shocks but they also have a coil spring for extra strength.  They’re often used in the front of the vehicle because of the engine’s extra weight.  As you might imagine, your struts take a beating every day.  Eventually, they will wear out, and your wheels and tires won’t stay connected to the road as well as they used to. In addition to a bumpier ride, you may notice your tires starting to wear with failing struts because those tires aren’t in contact ... read more

Many of us have become aware of how important it is to keep our planet’s air clean, and your vehicle has a key component that helps do just that: the catalytic converter.  It’s in the exhaust system, and its job is to superheat unburned, harmful byproducts in the exhaust, so they don’t get spewed out into the atmosphere. There’s another important purpose the catalytic converter has: it improves your vehicle’s efficiency.  Most of us don’t give the catalytic converter much thought until it breaks or someone steals yours, something that’s been happening much more frequently in recent years.  The reason people steal them is that catalytic converters use precious metals such as platinum, palladium, and rhodium to do their job. So, they contain valuable materials thieves can sell. The most likely reason you will have to replace your catalytic converter is age.  The more distance your vehicle travels and the more hours your engine ... read more

When one of your vehicle’s warning lights comes on, the first thing that comes to mind is, “Oh, no, what’s wrong now?” When it’s the battery light, it means there’s something wrong with your vehicle’s battery or charging system.  And because both are important for your vehicle to work properly, it’s a good idea to get it checked out.  Here are some things that may cause a battery light to illuminate. It could be that your battery has failed.  It could be on its last legs or completely dead.  When it isn’t showing it has the voltage it should, your vehicle lets you know. If it’s not the battery itself, it could be the system that charges it.  The alternator is part of that system and could have a problem.  It could be putting out no power, too little power, or too much.  The alternator may not be working because the belt that drives it (using the engine’s mechanical power) could be broke ... read more

It's always easier to leave a few things in your vehicle so you'll have them on hand.  But in cold weather, while it's a good idea to carry items such as a phone charger, blanket and shovel, there are some things you shouldn't store in your vehicle. Medicines and drugs.  Cold temperatures can affect the chemical makeup of some drugs.  Avoid leaving them in a vehicle, especially those in a liquid form like insulin, eye drops and cough syrup. Latex paint.  They are water based, and when they freeze, they get lumpy and lousy.  Your paint job will not be what you had in mind. Cellphones and computers.  Most of these have lithium ion batteries.  If they get colder than freezing (0 degrees C, 32 degrees F), if you try to charge them, you'll more than likely ruin the batteries.  Bottled water, soda, wine or beer.  OK, here's the scoop.  All of these can freeze and split the container they're in.  Yes, soda, wine and beer will take a lowe ... read more

If you notice your brakes aren’t working like they used to, that’s the kind of thing that’s important to have checked out soon.  That’s because your brakes are extraordinarily important to the safe operation of your vehicle.  Sometimes you feel like your brake pedal is feeling a little soft or it’s lower than usual. Or you might feel like the brakes are on all the time, holding you back. Maybe when you release the brake pedal, it comes back up more slowly than usual. There are a few different problems that can cause your brakes to feel like any of those things, so bring your vehicle in to us and we can inspect them. One possible cause of those brake issues is a damaged or worn-out brake hose.  Your hydraulic brakes work by carrying brake fluid to each of your wheels.  There are steel lines that carry the fluid most of the way, but because your wheels are moving all the time, a flexible hose is used to connect the steel lines and the bra ... read more

Don't love winter weather? Here's a list of four things you need to keep a watch on during the winter months. Let's start with coolant levels.  Coolant is as important in cold weather as it is in hot weather.  Think of the term "anti-freeze." Your coolant needs to be adjusted for climate and temperature so the coolant doesn't freeze when the vehicle isn't running. Your service facility will know the right mixture. Next, windshield wiper fluid. Winter weather can be challenging when it comes to visibility, so it's important to have the correct windshield washer fluid.  Some of it is specially formulated for ice and freezing temperatures. And it won't freeze if your vehicle has to sit out in below-freezing temperatures.  And don't forget you can get winter wiper blades that stay clearer in snowy, icy weather than ordinary blades. Don't forget your tire pressure and tread.  After all, tires are what connect your vehicle and the road.  As temperatures go down ... read more

A driver brought her vehicle into the shop the other day and told us how she was getting lousy fuel economy and that the engine was running rough.  Plus, the Check Engine light was on.  Our technician checked the code the engine had generated (why the Check Engine light was on) and found the problem.  It was a faulty Mass Air Flow sensor, MAF sensor for short. This MAF sensor is an important part of your vehicle.  What it does is calculate the amount of air going into your engine.  As you may know, air is taken into your engine where it's mixed with fuel.  Then, the spark plugs fire, that explosive fuel/air mixture detonates, and all these sequential explosions together provide the power to get your vehicle moving down the road.  It makes sense that if the MAF sensor isn't sending the engine's computers the correct information on the amount of air going in the engine, the fuel/air mixture isn't going to be right. It will either too rich (too much gaso ... read more

Your gasoline engine goes through some exhausting work.  Yes, it's truly exhausting, as in: it produces exhaust! And when your engine starts behaving like it's exhausted, such as running poorly or getting lousy fuel economy, the trouble may be something called a PCV valve. Did you know it's a series of explosions that creates the power in your engine? The spark plugs ignite a mixture of gasoline and air and BANG! A whole bunch of those and you're engine is humming away. Leftover vapors from those explosions go into your crankcase, which is also a place where engine oil goes.  Those vapors still have a lot of unburned fuel in them, and if they had nowhere to go, they'd turn your oil into a thick mess called sludge, not good for a smooth running engine.  Engineers came up with an idea. Re-direct those gasses building up in the crankcase into the engine's air intake and mix them with fresh air.  That way the unburned fuel could go through the engine again and produce p ... read more