The serpentine belt is the belt driven by the engine as it turns. It powers your alternator, conditioner compressor and power steering pump. Your vehicle wonâ€™t run if the serpentine belt breaks. Also, itâ€™s important for the belt to be tight. There is a portion of your engine that puts pressure on the belt to keep it at the right tension. If the belt is too loose, it will slip. Belt wear canâ€™t always be seen, but can be measured by a trained technician using a special tool that measures the depth in the grooves of the belt to see if it needs replacing.
Studies show that 20 percent of vehicles on the road today need a serpentine belt replacement. A worn belt can break without warning, so the best thing is to replace your serpentine belt before if it is worn or damaged.