A vehicle’s belts are essential to the cooling, air conditioning and charging systems of the engine. Serpentine belts are used to turn the water pump, alternator, power steering and air-conditioning compressor. Older cars use V-belts for various accessories.
Always check serpentine and V-belts for looseness and their overall condition. Replace V-belts when cracked, frayed, glazed or showing signs of excessive wear. Noise in the belt system is a sign of wear and the smell of burnt rubber can indicate a slipping belt. When changing a serpentine belt, it is important to check all the components in the serpentine system as tensioners and pulleys wear at the same rate as the belt and should be inspected.