Rumble when stopping or backign up - Ford Powerstroke Diesel Forum
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  #1  
Old 10-20-2008, 06:33 AM
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Rumble when stopping or backign up

When I stop more quickly than usual the truck starts to knock, or a better description would be a rumble. When I back up its a very heavy rumble, like the motor is shifting and rubbing on something. The mounts appear to be fine. It does not do this in drive. Someone mentioned U joints to me, what do you guys think?
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Old 10-20-2008, 08:31 AM
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have you tryed power braking it with someone watching the motor?
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Old 10-20-2008, 08:46 AM
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nope. but i powerbraked a while ago just messing around and dont recall hearing the noise, ill do that today again to be sure.
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Old 10-21-2008, 11:07 AM
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My truck did that when I first put the 3" downpipe on, it only came in contact with the firewall during braking or in reverse. Thats only possible if you have aftermarket exhaust though.
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