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  #1  
Old September 19th, 2006, 06:42 AM
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noise

I have a funny sort of rattling/grinding sound, there is no vibration in the truck. Pulling away it feels tight, the engine sounds fine, under power sounds fine, get to speed and ease off the power to maintain speed the noise starts, accelerate again noise goes, ease off to maitain speed its back again. sounds like its comming from the transfer case. any idears
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  #2  
Old September 19th, 2006, 07:33 AM
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Quote:
Originally Posted by jimmy salmon
I have a funny sort of rattling/grinding sound, there is no vibration in the truck. Pulling away it feels tight, the engine sounds fine, under power sounds fine, get to speed and ease off the power to maintain speed the noise starts, accelerate again noise goes, ease off to maitain speed its back again. sounds like its comming from the transfer case. any idears
Worn transmission output shaft / T-case input ?
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Old September 19th, 2006, 07:57 AM
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Thanks Matt, Other than taking out the T/C is it an easy fix?
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  #4  
Old September 19th, 2006, 08:37 AM
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If you have more than a 2" lift and are running the stock rear shaft, not a CV rear shaft, you can also get this "no load" growl. It does come from the transfer case, but unless your transfer case is shit you can solve it by running a CV rear shaft.
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Old September 19th, 2006, 09:21 AM
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Hey Jimmy, hows the home bar? Have you done anything with your lift recently? I would bet it is the situation mike mentioned. Although the sound could be from the fr output. I have talked over the yrs with many who had the sound come from the front vs rear output. You can always pull the front shaft and drive it. JP
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Old September 19th, 2006, 09:36 AM
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Hi JP, The bar is as good as ever, spend most Friday nights in there emerging Saturday morning. The lift is the same 2" and never had the noise before, i will pull the shaft and see. i was out a couple of weeks ago, bent the exhaust, ripping out a stud, bent the front diff gaurd, bashed the rear diff which caused a leakat the seal and maybe pounded the T/C. fixed those last W/E. the noise started after that. really must keep it out of 3rd low and booting it
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Old September 19th, 2006, 10:15 AM
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had a similar sound on my motor once was convinced it was transmission related. It turned out to be the power steering drive belt tensioner pulley bearing
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Old September 19th, 2006, 11:27 AM
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If your rear diff pinion seal started leaking right after the munch ,then you may have bent the rear drive shaft. Are there any fresh rash marks on pinion flange or drive shaft? I would think a tweaked shaft would vibe pretty well. You have a double cardon drive shaft dont you? I remember your foot and the gas pedal being very friendly together. But I doubt you trashed the TC. Also inspect the Emer brake drum. May have bent it.
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Old September 19th, 2006, 02:28 PM
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Quote:
Originally Posted by ne4x4
had a similar sound on my motor once was convinced it was transmission related. It turned out to be the power steering drive belt tensioner pulley bearing
Same here, I heard a knocking noise that sounded like it came from the bell housing, happened on the way home from school and it scared the bejesus out of me. I thought pieces of the clutch pad or throwout bearing had broken apart and was being "tumbled". There was tumbling alright, turned out to be my catalyic converter, it had broken apart inside and pieces of the honeycomb were be jostled around. $200 fix with new cats.
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  #10  
Old September 19th, 2006, 03:02 PM
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well its $1 Guinness tonight at whippas so will look at things tomorrow.
Thanks for the suggestions
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Old September 20th, 2006, 08:36 PM
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Took the front shaft off, noise the same. Removed the rear and the noise seemed worse, drove it around the block with the inspection plate in the seat box off, the noise is definatley comming from the rear of the T/C. What to look for now??
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  #12  
Old September 20th, 2006, 08:59 PM
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Well you should drain the TC oil and look for little pieces of love carnage. Also pop off the brake drum. Maybe something broke loose( Brake shoe springs , etc.) Long live stout.
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  #13  
Old September 20th, 2006, 09:05 PM
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took the drum off, every thing looks good, oil drain and take inspection plate off, wont be till next week tho, will be too busy eating and drinking at the highland games all weekend
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Old September 21st, 2006, 08:33 AM
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Quote:
Originally Posted by ECR
If you have more than a 2" lift and are running the stock rear shaft, not a CV rear shaft, you can also get this "no load" growl. It does come from the transfer case, but unless your transfer case is shit you can solve it by running a CV rear shaft.
Mike, I suffer from the no load growl. Just put a 2" OME lift on and 255/85 tires. Could you elaborate on the CV rear shaft? Source/Cost/Difficulty of install? Thanks in advance.

-Neil
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  #15  
Old September 25th, 2006, 07:10 PM
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Just drained the oil, was clear, no smell and no chunks of metal.the noise seems to be comming from the rear of the T/C, pulled the output flange and the inspection plate, to the untrained eye everything looked ok (as if brand new). Anything in particular i should look for in there?.
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  #16  
Old September 25th, 2006, 10:26 PM
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Well drive it till it drops. Maybe the drum had some sand in it and was rubbing on the pads. Or possible the drum was adjusted a little on the tight side. Adjust EBrake to specs. JP
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