Posted on 1/25/2026
There's a belt that snakes through your engine. It's even named for a snake, the serpentine belt. It'll bite you when it breaks, possibly leaving you stranded. So, it's good to know a little about this snake-like belt. In early engines, there were lots of belts. They were used to convert the rotating power of the engine to turn a mechanical part. But engineers had an idea. Why not consolidate all those belts into one that ran a bunch of different parts simultaneously? Voila! The serpentine belt. It's found in the front or side of your engine unlike older belts which were often in a V shape, the serpentine belt has ribs on it which more effectively connect with the pulleys that power the other components. A serpentine belt may power the water pump, power steering pump, alternator, and the air conditioning: all from one crankshaft. Now, all that's fine when everything is working well and the belt is intact. But when a serpentine belt ... read more
Posted on 1/18/2026
If every road was straight and smooth, we wouldn't have to worry much about wheel alignment. But they're not, so we do. Hitting potholes or driving on rough pavement can knock your vehicle out of alignment and you'll notice it in one of several ways. Your steering wheel may not be centered when you're driving straight ahead, or your vehicle may pull to one side. You may find your tires wearing on one side or they may squeal. All are signs that could point to you needing an alignment. Your wheels should be perpendicular to the road and parallel with each other. If not, your tires will wear out faster and your vehicle won't go straight on a level straightaway. In alignment, there are several factors that must be checked. One is camber. Your wheels should be straight up and down if you look at them from the front. If not, you'll wear your tires unevenly on one side. Another factor is caster, the angle of the steering pivot. Most vehicles have what ... read more
Posted on 1/11/2026
You've probably never paid much attention to the writing on the sides of your tires, but they contain a wealth of information. There's a long combination of letters and numbers that can tell you a whole lot about what tires your vehicle was designed to be riding on. Let's check out this example found on an SUV: P245/70R17 108T. The first letter, P, means it's intended for passenger vehicles. If there's no letter, it means it's a metric tire. If there's an LT at the beginning or end that means a tire designed for light trucks. Moving on to our example, the 245 shows how wide the tire is in millimeters from sidewall to sidewall. The number that follows in our example, 70, means the height of the tire is 70% of its width. The letter after that in our example, R, describes the type of tire (on this vehicle, radial). Following that is the diameter in inches, in our SUV example, 17 inches. How much load the tires' sidewalls are designed to take ... read more
Posted on 1/4/2026
There are some boots that don't come in a shoe box and aren't worn on your feet. They are called axle or CV boots, and they can be important parts for many vehicles. That CV stands for constant velocity. CV axles are mainly used in front-wheel drive and all-wheel drive vehicles. They're also used in some rear-wheel drive vehicles with independent suspensions. They have two CV joints, one inner and one outer, placed between the axle and the drive wheels. That way the vehicle's engine power can drive the wheels, no matter what angle they are. They also adjust for the different speeds wheels turn as they go around corners. Because roads are full of all sorts of hazards (dirt, oil, water, grime), these CV joints need to be protected. They also have grease in them to keep the bearings moving smoothly. That's the job of the rubber boots that are supposed to keep that debris out. These CV or axle boots are made of rubber or plastic and usu ... read more