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  #1  
Old 12-15-2001, 08:45 PM
Henry
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Vibration or droning at 75mph with throttle ON

When cruising at 75mph, depressing the throttle causes a sort of vibration or droning. Low frequency, constant.

I went to 2WD and it still happens, so it is not the drive shaft, rear axles, or rear wheel bearings. I pulled the two front axles and sent them to a specialist to be checked - nothing wrong.

All mounts are okay - the rear tranny mount is new.

This is frustrating! What else could it be?
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  #2  
Old 12-15-2001, 08:57 PM
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Beav Beav is offline
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Could be a lot of things, muffler hangers, etc. Could also be differential bearings. Tough to tell without being there.

Beav
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Old 12-15-2001, 10:21 PM
Henry
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Not muffler hangars - I checked the integrity of the exhaust system. Diff bearings...? Maybe.

Is there a diagnostic procedure?
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Old 12-16-2001, 06:44 AM
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Yes and no. It can be difficult sometimes for even an experienced ear. Best bet would be a free inspection at a recommended tranny shop.

Beav
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