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02-21-2012, 04:28 AM
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#1 |
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Registered User
Join Date: Aug 2009
Location: Oregon
Posts: 611
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What's wrong with my 4WD?
A while ago I put my truck into 4WD and something popped....I had to drive home a few miles making a loud thunking noise all the way. The noise continued even when I put it back into 2WD.
First I thought the problem was the hub, but I took that apart and everything looks well. So then I took out the front drive shaft, and now it seems to drive ok. What does that say about my problem? I took out the drive shaft and the thunk noise went away. Is there something wrong with my T-case?
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'73 K20 Cheyenne Super Camper Special 350/TH350/NP205 sittin' on 33's. You can set my truck on fire and roll it down a hill, and I still wouldn't trade it for a Coupe de Ville. |
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02-21-2012, 08:44 AM
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#2 |
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Registered User
Join Date: May 2005
Location: evington,va
Posts: 1,207
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Re: What's wrong with my 4WD?
Pull the front diff cover off an check inside sound like ya broke spider gears maybe
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02-21-2012, 02:43 PM
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#3 | |
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Chevys Kick A$$
Join Date: Jan 2005
Location: Zootown, MT
Posts: 12,699
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Re: What's wrong with my 4WD?
Quote:
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*HOODS is what I answer too* -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold  -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit   -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER  I would rather push a Chevy then drive a ford!!
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02-21-2012, 05:35 PM
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#4 | ||
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Registered User
Join Date: Aug 2009
Location: Oregon
Posts: 611
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Re: What's wrong with my 4WD?
Quote:
Quote:
__________________
'73 K20 Cheyenne Super Camper Special 350/TH350/NP205 sittin' on 33's. You can set my truck on fire and roll it down a hill, and I still wouldn't trade it for a Coupe de Ville. |
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02-21-2012, 05:47 PM
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#5 |
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Registered User
Join Date: Dec 2010
Location: Alberta
Posts: 165
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Re: What's wrong with my 4WD?
Check yer U-joints! Front and rear shaft. My money is on the front though, took the front shaft out and the noise went away, so points to the shaft, or at least the front axle.
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02-21-2012, 08:09 PM
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#6 |
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Registered User
Join Date: Aug 2009
Location: Oregon
Posts: 611
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Re: What's wrong with my 4WD?
Is there any way to see if the U joint is bad besides replacing it? The one I have looks ok, but I don't know what I'm looking for...
__________________
'73 K20 Cheyenne Super Camper Special 350/TH350/NP205 sittin' on 33's. You can set my truck on fire and roll it down a hill, and I still wouldn't trade it for a Coupe de Ville. |
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02-21-2012, 08:23 PM
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#7 |
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Registered User
Join Date: Aug 2009
Location: Vancouver, BC
Posts: 147
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Re: What's wrong with my 4WD?
with a u joint there will eather be extar movement or a visable sign
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02-21-2012, 08:50 PM
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#8 |
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Registered User
Join Date: Dec 2010
Location: Alberta
Posts: 165
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Re: What's wrong with my 4WD?
Take the driveshaft out and physically move the U-joint around, look for stiffness, twist the caps, see if they still have lubrication in them. The front axle u-joints you can check by lifting one side off and turning the wheel to one side and then spinning the tire by hand, see how it feels.
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