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Belt Tensioner - Dynamic

WARNING: This page is about a different car, the 2003 Mazda Tribute and 2002 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.

The belt tensioner can be checked dynamically as follows:

  1. With the engine running, observe the belt tensioner movement. The belt tensioner should move (respond) when the A/C clutch cycles (if equipped), or when the engine is accelerated rapidly. If the belt tensioner movement is constant without A/C clutch cycling or acceleration, a pulley or shaft is probably bent or a pulley is out of round. In rare cases, excessive drive belt rideout (uneven depth of grooves in drive belt) can cause excessive drive belt tensioner movement. This condition can be checked by installing a new drive belt, and repeating the observation.
  2. With the engine off, check routing of the drive belt. Refer to ACCESSORY DRIVE .
  3. Inspect the belt tensioner wear indicator to confirm the drive belt is within operating range. Install a new drive belt if necessary. Refer to ACCESSORY DRIVE BELT TENSIONER - 3.0L DURATEC (4V) .

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