7.3 WHining - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 3 (permalink) Old 05-23-2010, 03:27 PM Thread Starter
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Angry 7.3 WHining

Have a medium to high pitch whine in my engine compartment.
It is directly associated with RPMS.
It does it in idle and gets louder as you accelerate. Has been going on for 70,000 miles.
Many people have looked at and could not diagnose.
As far as the performace of the truck, i tow trailers with it regularly and have no problems.
Any ideas???????
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post #2 of 3 (permalink) Old 05-24-2010, 03:43 PM
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Belt? Bad pully or bearing.... Grab your can of WD 40 and give the belt a little squirt it will tell you right away.. (I didnt think my belt was bad as i had just changed it 3 months ago gave it a squirt and teh noise went away... while it was off found a bad tensioner) If that dosent work try to sqirt all the pully's front and back as well as the alt...
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post #3 of 3 (permalink) Old 06-03-2010, 04:12 PM
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i had a simmialr prob. i had no overheating problems at all, but it was the fan clutch. threw a used one on and fixed the prob. spent a while tryin to figure out what pully it might have been, but the prob was just starin me in the face the whole time

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