Posted on 10/27/2025
Your vehicle’s engine is an engineering work of wonder with many complex parts working in harmony to get you down the road. One of those simple but important components is called a serpentine belt. It is driven by a pulley on the engine and transfers that power to many of your engine’s most important components. The serpentine belt may drive the alternator, water pump, power steering pump and air conditioning compressor. When it’s working like it should, you won’t even notice the serpentine belt. But when it starts to fail, you may hear a squealing noise coming from under the hood as the belt starts slipping. Heat and time take their toll on the serpentine belt, causing it to crack or even to start shredding. When this happens, it may not drive your alternator correctly, and your battery light may come on. If the water pump isn’t turning, your engine may overheat, causing the heat gauge to show hotter than usual. When t ... read more
Posted on 3/12/2023
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