Serpentine Belts-Many late model cars use a single serpentine belt in place of individual belts to drive accessories. Be sure your to inspect your Serpentine belt or have it inspected during routine maintenance, when you have your oil changed or during trip and preventative maintenance checks. This will keep you off the side of the road and prevent costly damage to your vehicle's cooling, power steering and air conditioning system. A belt that gets soaked with oil or fluids will become glazed and slipping will occur. Check for loose idler pulleys. Serpentine Belt problems are likely caused by an idler pulley that is loose or been damaged by dirt and debris building up between the belt and pulley, causing gouging, pitting or chipping of the pulley and accelerating wear of the Serpentine belt.

Timing Belts and Chains-The camshaft is driven by the crankshaft and timing gears by the timing belt or chain. Regular maintenance and following your engine manufacturers recommended replacement schedules for timing belts and chains is essential. A worn or stretched belt can result in changes in timing accuracy.