Help Needed With Pulley Noise

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Nov 2, 2009 | 11:13 AM

Jager

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Help Needed With Pulley Noise

I think I'm loosing a bearing in a pulley because it sounds like one is going out. The problem is I can't ID it. It sound like its coming from the passenger's side up high. The noise goes away when the truck has been ran for about 2-5 miles. After a drive of 10 miles no temp difference between them on feeling the pulleys. Could it be a fan clutch? Can any one help? Thanks

Nov 2, 2009 | 11:23 AM

clintbonnie

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From: Ardenvoir, Washington

You can sometimes wriggle the pulley and see if there is any movement..Try and do this with the idler, tensioner and the water pump pulleys..

Nov 2, 2009 | 11:38 AM

kirkharrod

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From: Frankfort, KY

With engine running, take a piece of wood (stick, dowel, stake, etc) and touch it to each piece that the belt goes around. You will feel the vibration when you find the culprit.

Nov 2, 2009 | 12:33 PM

Smokin'

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Based on your discription of where the sound is coming from, you may want to check your tensioner pulley. When they go bad they start to back away from the block....

Nov 6, 2009 | 12:03 AM

Jager

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Replaced the smooth tensioner pulley and it seems to have solved the problem. 169K miles on a 99 F350. Cost of pulley $29 Napa.

Thanks for the help

Nov 6, 2009 | 05:55 AM

Smokin'

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Nice. Thanks for the update.

Nov 16, 2009 | 02:21 PM

thesnowboarder

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Quote:

Originally Posted by kirkharrod

With engine running, take a piece of wood (stick, dowel, stake, etc) and touch it to each piece that the belt goes around. You will feel the vibration when you find the culprit.

Is this the case with all the pulleys?

I ask, because ive got what i suspect a pulley going out under the hood of my 99 f-250 w/107k on it. One pulley, the tensioner has a bit of wiggle to it if i try moving it ( motor off of couse) Another pulley has a bit of vibration to it when on ( the stick method in post # 2 or 3)