Rocklin and Sacramento Auto Repair

You may have never thought about it, but when you turn a corner, the wheels on one side of your vehicle turn at a different speed than the other side.  What is this magic? The answer is something called the differential.   A differential is a gear box placed between the drive wheels and needs lubrication to work.  Over time, that fluid can become contaminated, reducing its effectiveness. You likely won’t be able to detect any signs that it’s happening, though it may get a little noisier over time.  If you continue to drive with contaminated and degraded differential fluid, the gears may wear prematurely. That can also contribute to excess wear on the drive-wheel tires.    Two-wheel drive vehicles have one differential while all-wheel and 4-wheel drive vehicles will have two or three.   Your vehicle’s manufacturer has guidelines on how often you should have the differential fluid changed, and we recommend you follow those.   Chan ... read more

Before You Buy a Used Vehicle (Car Inspection before Buying a Used Vehicle) Perhaps this sounds familiar. Your vehicle seems like it’s been around forever, and you’ve decided it’s time to move on.  But when you check the price of new vehicles, the sky-high price tags have you considering a nice, pre-owned one.   So, you start looking through the ads and find a few prospects.  A couple look great, and the owners say they’re in like-new shape.  But most of us aren’t trained mechanics, nor do we have the equipment to run the tests to determine what’s right and what’s wrong with a used truck, car, SUV or van. 
 
The answer may be to consider having a trained professional perform an independent inspection on the vehicle you have your eye on. Some dealers may conduct their own inspection, but you are best served by having someone not associated with the seller thoroughly check that vehicle you have your eye on. A t

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If you’ve ever driven a bicycle with hand brakes, you’ll probably understand how the brake pads on your vehicle work.  Bicycle brakes use a system that squeezes the bike wheel’s rim with a pair of cushioned pads activated by your hand squeezing the hand brakes on your handlebars. The friction of those pads stops the wheel. That’s the same principle used for the wheels on your vehicle.  Step on the brake pedal and that causes pads to put pressure on discs in the wheels called rotors.  Those pads create friction and stop the wheels from turning. Brake pads in vehicles are made from several different materials.  The pads most commonly used are ceramic or a combination of metals. The friction that stops your vehicle generates heat and wears both the pads and, eventually, the rotors, too.  That means that, over time, both are going to need replacing to work properly.  One sign brake wear is getting noticeable may be  when you hear s ... read more

If you are like most drivers, you don’t worry too much about what shape your radiator hoses are in.  But they are a vital part of your coolant system, helping carry engine coolant from the hot engine to where it is cooled off in the radiator.   When the cooling system has a problem, you will likely see your vehicle’s temperature gauge showing you it’s running at a higher temperature than it usually does. Or maybe the low coolant light has come on.  If either of these happens, it’s important that you not drive too long since a hot, running vehicle can suffer expensive damage quickly. Radiator hoses can be damaged by being subjected to temperature extremes, both hot and cold. In addition to the temperature gauge climbing or low coolant light illuminating, there are other clues that may tell you your vehicle is leaking fluid.  You may notice a green, yellow, brown or purple fluid pooled on the ground around your vehicle.   At any of these s ... read more

When your vehicle’s battery is dead, it leaves you with that horrible, helpless feeling.  A dead battery means it won’t hold a charge, and there are several reasons it won’t. One is age.  Batteries have chemical and electrical systems in them that create power, and as time goes by, they won’t work well anymore.  They may have been degraded by exposure to extreme temperatures, both hot and cold. Batteries have a code on them that can tell you when they were manufactured. Another reason your battery won’t hold a charge is corrosion on the terminals, the metal posts where your battery cables are connected.  A chemical reaction between the battery’s acid and air creates a salty moisture that can corrode those terminals.   If your vehicle’s alternator is not working properly, it won’t charge your battery as it is designed to, and the battery may lose its charge more quickly than it should. Another possibility is there ... read more

Think about this the next time you’re driving.  Your front wheels can steer your vehicle and, at the same time, the wheels can move, even with all the irregularities in the road moving them up, down and in different directions. Pretty amazing engineering, wouldn’t you say? What allows that are parts called ball joints.  Most vehicles have them only in the front, but there are some vehicles that have them in the rear as well.  When you consider all the bumps and turns your wheels are subjected to, it’s not hard to imagine the wear and tear these ball joints endure. After any vehicle has put on many months of road time, these ball joints will start to wear out.  You may find your vehicle’s front wheels clunk when you are on the road, it may not hold the road as well when you go over a bump, or you may feel vibration in your steering wheel and your tires may start to wear unevenly. When you start to notice any of these symptoms, it’s a goo ... read more