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Old 02-22-2010, 06:28 AM   #1
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Adventures in TJ driveline squeaks

Seems I have isolated a squeak to the front driveshaft... Sometimes it there when its cold then disappears as it get warmer... Sometimes it there all the time. Went under the jeep and tried to spin the shaft by hand and the whole thing slops back and forth about 1/10 of a turn. Went to the rear and its rock solid and wont move at all... Go back to the front and its not the u-joint moving independently... its the whole drive shaft from diff to transfer case... Is this normal??? Any ideas are appreciated.. thanks
Rick

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Old 02-22-2010, 10:33 AM   #2
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Dude, I recently had the same issue....cold mornings, it would make all kinds of noise. As it warmed up, most of the time it would go away.
Replaced all 3 u-joints on the front driveshaft, and the noise is gone.
Use your search button and type in "angry sparrows". You'll find my thread about this same issue. That should be your problem.
By the way, there should be some slop in your driveshaft.

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Old 02-22-2010, 10:45 AM   #3
Knows a couple things...

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Yep the squeaking is possibly one of the u-joints on the front driveshaft but even slightly more likely is the centering joint inside the CV is the actual source of the squeaking The centering joint is underneath the two u-joints at the t-case end of the driveshaft & they go bad from a lack of grease.

Rotational play like you described is normal though, that is from the backlash (slop) between the ring & pinion gears.
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Old 02-22-2010, 11:11 AM   #4
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You fellas are always right on point... thanks... Ill look up that thread... I didnt know there were three u-joints on the front shaft.. I thought it was only two... Time to hit the diagrams.. Thanks again
Rick
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1997 Jeep Wrangler Sport
I6 4.0 Automatic
168,000 miles upon purchase
4" Rough Country Suspension Lift
1-2"? Body Lift
35x12.5x15 Pro Comp Tires
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Old 02-22-2010, 12:30 PM   #5
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Be careful when you pull your skid plate to access the T/C case when you remove your drive shaft. The skid plate is actually what supports your T/C case. You'll have to support the T/C with a jack before you begin to remove your skid plate.
Also, if your skid plate hasn't been off for a while, put the PB Blaster to the bolts. I had a heck of a time busting them loose until I put the PB to them. They actually even had locktite on them, making it even more of a pain.

Hey Jerry, I had my tires balanced and rotated the same day I replaced my u-joints. After all said and done, I now have a very slight vibration I am feeling in my seat. Before anything was done, I had a vibration in the steering wheel and the front end. That's what prompted me to get them balanced and rotated.
Obviously, I will take the jeep back and have the tire shop re-balance the back tires first to see if the vibration goes away, but my question for you is....Do you think that vibration could be coming from the work I performed while replacing the u-joints? It was a pretty simple process, just a pain in the butt, as replacing u-joints usually are.
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Old 02-22-2010, 01:00 PM   #6
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Thanks for the tidbit... Not sure if this is allowed but I got to talking to Wayne from alljeep.com. He spent about 20mins with me on the phone explaining to me what to do and what parts I would need... Dont find customer service like that anymore. Anyways.... another project for the jeep... Cant wait!!!
Rick
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I6 4.0 Automatic
168,000 miles upon purchase
4" Rough Country Suspension Lift
1-2"? Body Lift
35x12.5x15 Pro Comp Tires
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Old 02-29-2012, 07:53 PM   #7
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Anybody know anything about a squeaking in the rear driveshaft? I'm pretty sure its coming from the rear and it squeaks when in first and then changing gears. It stops when you press in on the clutch and doesn't squeak when going down the road. It also squeaks all the time in reverse.

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