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Terrible grinding sound!!

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Old Jul 25, 2007 | 06:05 PM
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Terrible grinding sound!!

1997 CC PSD 4x4 1010k light modds

Had a loud grinding sound comming from what sounded like the tranny area. Needed a new tranny badly. Put in a built tranny and torque converter from ATS and thought that might take care of it.

It did not!! It is probably 4 times worse now!!! It will not do it around town. Happens when i have at least a light load and am pushing it and after going up fairly steep grades. When i let off the throttle, it has a extremely loud pulsing sort of grinding sound. Gets worse the farther I turn to the right.


Please, any thoughts our help is extremely appreciated!!!
 
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Old Jul 25, 2007 | 06:09 PM
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Down pipe hitting the cab maybe
 
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Old Jul 25, 2007 | 09:04 PM
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You might check the front right hub and see if it's locked in....just a shot in the dark....
 
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Old Jul 25, 2007 | 10:05 PM
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I do have a 3 inch down pipe. This was a thought that went through my mind but why would it make the grinding sound so much more now. Is there any way to make more room for the down pipe?

The hubs are both unlocked. Good thought though that was one of the first things I checked.
 
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Old Jul 26, 2007 | 08:18 AM
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Does it really have over a million miles? LOL (I assume typo)
 
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Old Jul 26, 2007 | 09:19 AM
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when the tranny was done the DP very easy could have been knocked around or even removed then reinstalled in a poor position. they come very very close to the tranny.
 
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Old Jul 26, 2007 | 09:43 AM
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yes typo sorry 110k!!
 
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Old Jul 26, 2007 | 11:02 AM
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are all your u-joints ok in the front? hows the transfer?
 
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Old Jul 26, 2007 | 02:57 PM
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I just noticed that when I step on the brakes it gets worse as well so maybe the torque of putting on the brakes pushes the pipe against the firewall??

The u-joint "seem" to be ok. I dont feel any play in them. Not sure about the transfer case.
 
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Old Jul 26, 2007 | 04:34 PM
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yep sure sounds like the down pipe hitting.
 
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Old Jul 26, 2007 | 08:04 PM
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I will check it out thanks guys!
 
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Old Jul 26, 2007 | 11:53 PM
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pics are appreciated. I am getting ready to install my dp and would like to be stuck under there once.
 
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Old Jul 27, 2007 | 09:42 AM
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I will post pics this weekend when I get under the hood.
 
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