6.0 Serp belt issues - Ford Powerstroke Diesel Forum
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Old 06-19-2012, 07:36 PM
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6.0 Serp belt issues

When under a load the fan comes on as it should. If the engine is above 2500 rpm the belt will squeal like a little pig. I have replaced 2 belts and the tensioner. At a loss as what to do next. Any ideas?
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Old 06-19-2012, 09:31 PM
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Have you checked the idler pulley bearings? Might be the cause.
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Old 06-19-2012, 11:05 PM
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Sounds like a failing fan clutch to me. My 03 did the same thing. High RPM under load, and squeal like no tomorrow.
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