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Old 06-12-2020, 02:05 PM   #29
Tjkarp
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Join Date: Jan 2018
Location: Guyton Georgia
Posts: 8
Idler Pulley Failure

My pulley failed at startup. It initially sounded like a hung starter (squealing). In the process of replacing it, I discovered the Overdrive Pulley on the Alternator was seized which may have led to the failure to begin with. It was the pulley just downstream of the alternator. I ended up replacing the alternator and pulley and added a new belt as well. My recommendation is if you have a sudden or catastrophic pulley failure, check out the Alternator Overdrive Pulley carefully (on manual transmission cars). If the the ODP clutch is seized, it can put a lot of stress on the whole belt drive train.
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2001 986 Boxster S
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