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Drive Belt Tensioner Diagnosis

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Drive Belt Tensioner Diagnosis

Step Action Yes No
1 Remove the drive belt. Inspect the drive belt tensioner pulley.
Is the drive belt tensioner pulley loose or misaligned?		 Go to Step 4  Go to Step 2 
2 Rotate the drive belt tensioner.
Does the tensioner rotate without any unusual resistance or binding?		 Go to Step 3  Go to Step 4 
3
  1. Use a torque wrench in order to measure the torque required to move the tensioner off of the stop.
  2. Use a torque wrench on a known good tensioner in order to measure the torque required to move the tensioner off of the stop.
Is the first torque reading within 10% of the second torque reading?		 System OK Go to Step 4 
4 Replace the drive belt tensioner
Refer to Drive Belt Tensioner Replacement .
Is the repair complete?		 System OK -
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