Some squeaking from under the hood? - Ford Powerstroke Diesel Forum
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Old 02-01-2011, 07:34 PM
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Some squeaking from under the hood?

Just recently my truck has been letting out a short high pitched squeak as it starts and when im drivin. I think it might be something with one of my bels but im not sure. Any thoughts or suggestions?
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Old 02-01-2011, 08:07 PM
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I'd start with the belt then look at the idler pulleys. There's three of, two smooth and one ribbed. I wound up replacing all three on my truck one at a time. Spray a little WD40 with the tube on the pully you suspect to be squeaking, if the sound goes away you found your culprit.
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Old 02-02-2011, 11:44 AM
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It could also be a tensioner,the belt dressing spray wil help determine that.l
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Old 02-02-2011, 12:12 PM
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check bearings on all pulleys
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Old 02-03-2011, 03:19 AM
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My squeak was the belt, caused by coolant starting to leak from the pulley shaft bearing, then running inside the pulley. FoMoCo wanted $278 for water pump, NAPA guy I've done work with for years said their pumps are US-made haven't had any comebacks since this productline introduced couple years ago $149, so I'm trying that. That was back in Oct., happy so far.
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