Auto Systems and Repair: Drive Belt/Fan Belt
Symptoms of Wear or Failure
- Belts may become dry, cracked, or glazed
- Belts may emit a chirping or squeaking sound
Related Repair Advice
- On older vehicles, belts with a “V" profile were the universal drive belt design, but more modern vehicles use the flat "ribbed" design
- The term "serpentine belt" referrers to a ribbed belt that drives multiple accessories.
- For optimal performance and reliability, belts should be replaced at the interval recommended by the manufacturer. We recommend replacing all of the drive belts as a set, so that they wear evenly.
- We recommend replacing drive belts if related components are being repaired and the belts have signs of wear or have over 30,000 miles on them
- High-quality drive belts are less likely to squeak and/or prematurely fail
- Leaking valve cover gaskets can cause premature drive belt failure. Engine oil will damage even a new belt.
- A water pump will require replacement if it begins to leak coolant or become noisy. Leaking coolant can damage the drive and timing belts.