Impala ss 95 - Impala Tech
Troubleshooting Diagnosing problems

 
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post #1 of 5 (permalink) Old 04-19-2013, 05:30 PM Thread Starter
 
 
Join Date: Oct 2012
Location: Shreveport
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Impala ss 95

Belt noise while engine running tensioner? alternator? engine pulley? don't know where its coming from n how to remove the tensioner
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post #2 of 5 (permalink) Old 04-19-2013, 06:44 PM
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The tensioner is a consumable part. When you replace the belt you also replace the belt tensioner. You will need a mechanic's stethoscope to isolate the noise to determine which bearing is giving you a problem. As often as I replace alternators I would suspect that part first, but if it was a high mileage car with the usual lack of preventive maintenance as well as routine maintenance performed on the vehicle it could be just about anything.

Big Dave
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post #3 of 5 (permalink) Old 04-19-2013, 08:43 PM
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It's likely the tensioner. However, double check like Dave said. Just use a long ratchet extension, or a piece of broom handle, place it on each part (NOT THE SPINNING PART!) and put the handle on your ear. You'll hear bad bearings immediately.

#2 is the tensioner, note that #4 shows an AC delete pulley instead of your AC compressor.


Two doors, four doors, wagons, and ragtops.
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post #4 of 5 (permalink) Old 04-20-2013, 04:31 PM Thread Starter
 
 
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Ok seems like the noise is louder when I turn on a/c does this have anything to with the compressor clutch
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post #5 of 5 (permalink) Old 04-20-2013, 05:56 PM
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It may, but check the tensioner first. The compressor engagement may just be putting more load on the bad tensioner bearings. You might be able to tell be simply slipping the belt off the tensioner (like in pic 1) then spinning the pulley on the tensioner. It should be very smooth, no noise.

Two doors, four doors, wagons, and ragtops.
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