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Old 11-06-2008, 04:57 PM   #1
EDUARDO is offline
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My 05 F650 Rollback has a whirring/whining that seems to be coming from the transmission. It almost sounds like a differential that has a bad pinion bearing. Usually more noticeable at higher speeds and when under a load. When coasting it disappears. We tried duplicating it with the truck up on stands, but with no load on it - its hard to hear. Its very annoying, but has no effect on trans operation.Any ideas?

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Old 11-06-2008, 04:57 PM   #2
EDUARDO is offline
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Join Date: Nov 2008
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My 05 F650 Rollback has a whirring/whining that seems to be coming from the transmission. It almost sounds like a differential that has a bad pinion bearing. Usually more noticeable at higher speeds and when under a load. When coasting it disappears. We tried duplicating it with the truck up on stands, but with no load on it - its hard to hear. Its very annoying, but has no effect on trans operation.Any ideas?

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Old 11-08-2008, 06:51 PM   #3
Ray,IN is offline
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Have you checked the universal joints?
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