Timing Belt Idler


Timing Belt Idler

A timing belt idler helps for routing and stabilizing a timing belt in its proper position. A typical engine features one timing belt idler, however, on some models you may find more than one idler pulleys. 


A bad or malfunctioning timing belt idler can cause a number of engine problems, including the following:

  • Grinding or roaring sounds coming from the timing belt area
  • Slapping or scraping sounds from the engine
  • Loose timing belt, skipping a tooth on the camshaft gear
  • Illuminated check engine light

Timing belt idler replacement recommendations 

  • A timing belt idler should be replaced whenever a water pump or driving belt is replaced.
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