The timing belt tensioner maintains appropriate tension in the timing belt. The tensioner can use spring tension or hydraulic pressure to properly tension the belt.
Symptoms of Wear or Failure
- Grinding or roaring type noise from inside the timing cover
- Belt may "jump time" (skipping a tooth or more, usually on the cam gear). This results in a loss of synchronization and engine performance.
- Trouble codes from the camshaft or crankshaft sensors, causing Check Engine Light to illuminate
- Slapping or scraping noises from engine
Related Repair Advice
- It is often recommended that you replace the tensioner along with items like the water pump, front engine seals, drive belts, and idler any time the timing belt is replaced