growling noise-1991 7.3 - Ford Powerstroke Diesel Forum
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Old 12-13-2007, 05:43 PM
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growling noise-1991 7.3

New to the forum, just spent a couple hours reading posts.
1991 ATS turbo 7.3 manual shift.
Truck is great in 2wd
When I lock the hubs (in 2wd) I get a growling noise around 55 mph +

If I lock the hubs and put in 4wd, I get another similar but different (louder) growling only in OD at around 65 mph. Above or below 65, no noise.

I don't know if both problems are related. I pulled off both hubs and the grease in the bearing looked good.

Any ideas? Thanks
Howard
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Old 12-13-2009, 04:11 PM
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same problem

i have a 96 1 ton 2wd manual tranny get same noise at 50 to 55mph have you figured it out yet
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Old 03-06-2010, 01:57 PM
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are your tires mached front to rear on the 4x4 if not it the diff tire sizes cause the tcase to spin at differ speed and can burn up a tcase
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