The Infamous cLuNk
08-06-2009, 02:21 PM
#16
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Year: 1990
Model: Cherokee
Engine: 4.0
???
Anyway, I'll be headed home tonight to get my hands dirty. I have to go home to my parents house to do any work on the jeep. The condo community wont let me work on the jeep in the driveway. They have really strict rules on draining fluids and leaving parts in the driveway.
(Although there have been successful night time oil changes)
Anyway, I'll be headed home tonight to get my hands dirty. I have to go home to my parents house to do any work on the jeep. The condo community wont let me work on the jeep in the driveway. They have really strict rules on draining fluids and leaving parts in the driveway.
(Although there have been successful night time oil changes)
08-06-2009, 04:26 PM
#17
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Year: 1990
Model: Comanche
Engine: 4.0 I6
???
Anyway, I'll be headed home tonight to get my hands dirty. I have to go home to my parents house to do any work on the jeep. The condo community wont let me work on the jeep in the driveway. They have really strict rules on draining fluids and leaving parts in the driveway.
(Although there have been successful night time oil changes)
Anyway, I'll be headed home tonight to get my hands dirty. I have to go home to my parents house to do any work on the jeep. The condo community wont let me work on the jeep in the driveway. They have really strict rules on draining fluids and leaving parts in the driveway.
(Although there have been successful night time oil changes)
08-06-2009, 04:51 PM
#18
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Year: 1996
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I'm having a similar clunk and have been doing the same searches you have, lol. You're not kidding that it could be just about anything under the sun. Given the way you describe it coming from the TC, be sure and check your tranny mount as it could be causing some movement in the TC. It's one of the things on my list to check as well as ball joints.
08-06-2009, 05:11 PM
#19
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Also check your trans/tcase mounts/bushings. If the bushings are worn the trans/tcase could shift when the force is applied and would shift in different directions when put in Drive versus Reverse
08-06-2009, 08:54 PM
#21
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Year: 2000
Model: Cherokee
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08-06-2009, 09:17 PM
#22
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08-06-2009, 10:47 PM
#23
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So I crawled underneath the Jeep today armed with a new u-joint and a tub of grease. I usually do most of my work at my parents house since most of my tools are there, but I do keep a small toolbox in the Jeep. I did end up borrowing a hammer from my neighbor in order to knock out the old u-joint though. Turns out it was shot. One of the rollers had no bearings or grease left in it. I dont think it had alot to do with the cLuNk from shifting, but it did make a significant improvement on a nasty shake I was getting cruising down the road. Next step was the drive shaft. I took some brake clean I had leftover and cleaned off all the old dirt and grease from the drive shaft and crank case. Slapped on some new grease when it was clean, and slid everything back together.
The first thing I did when I was finished was climbed in and started shifting between gears. I didnt really notice a whole lot of difference right away. Took it down the road and back and the second I pulled into the drive I noticed it when I threw it into reverse. It still made the noise but definitely wasnt as harsh. Since I was at my place I decided to wait to change the t-case fluid. We aren't really supposed to work on vehicles in the driveway at the condo anyway. (might be a job for late night ninja mechanic)
The first thing I did when I was finished was climbed in and started shifting between gears. I didnt really notice a whole lot of difference right away. Took it down the road and back and the second I pulled into the drive I noticed it when I threw it into reverse. It still made the noise but definitely wasnt as harsh. Since I was at my place I decided to wait to change the t-case fluid. We aren't really supposed to work on vehicles in the driveway at the condo anyway. (might be a job for late night ninja mechanic
)
08-07-2009, 02:12 AM
#24
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Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
So I crawled underneath the Jeep today armed with a new u-joint and a tub of grease. I usually do most of my work at my parents house since most of my tools are there, but I do keep a small toolbox in the Jeep. I did end up borrowing a hammer from my neighbor in order to knock out the old u-joint though. Turns out it was shot. One of the rollers had no bearings or grease left in it. I dont think it had alot to do with the cLuNk from shifting, but it did make a significant improvement on a nasty shake I was getting cruising down the road. Next step was the drive shaft. I took some brake clean I had leftover and cleaned off all the old dirt and grease from the drive shaft and crank case. Slapped on some new grease when it was clean, and slid everything back together.
The first thing I did when I was finished was climbed in and started shifting between gears. I didnt really notice a whole lot of difference right away. Took it down the road and back and the second I pulled into the drive I noticed it when I threw it into reverse. It still made the noise but definitely wasnt as harsh. Since I was at my place I decided to wait to change the t-case fluid. We aren't really supposed to work on vehicles in the driveway at the condo anyway. (might be a job for late night ninja mechanic)
The first thing I did when I was finished was climbed in and started shifting between gears. I didnt really notice a whole lot of difference right away. Took it down the road and back and the second I pulled into the drive I noticed it when I threw it into reverse. It still made the noise but definitely wasnt as harsh. Since I was at my place I decided to wait to change the t-case fluid. We aren't really supposed to work on vehicles in the driveway at the condo anyway. (might be a job for late night ninja mechanic
)
08-07-2009, 07:39 AM
#27
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Year: 2000
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My mistake for forgetting that part Fantic. I had the Jeep in N and was using the ebrake to keep the thing from roling down my driveway. This way I could easily roll it a few inches so I could reach all the little bolts to remove the u-joint. After installing the new u-joint, I grabbed ahold of the driveshaft to check the play and there was not much travel at all. Not a half inch anyway.
It felt pretty good as I drove it in here and got to work. I shifted through the gears again in the parking lot. It is substantially better than it was. Besides, wouldnt slack in the ring and pinion mean there would be a small clunk each time you push in the gas? Seems like you would be able to feel it, much like the u-joint.
08-07-2009, 08:51 AM
#28
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Year: 1988 limited
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My mistake for forgetting that part Fantic. I had the Jeep in N and was using the ebrake to keep the thing from roling down my driveway. This way I could easily roll it a few inches so I could reach all the little bolts to remove the u-joint. After installing the new u-joint, I grabbed ahold of the driveshaft to check the play and there was not much travel at all. Not a half inch anyway.
It felt pretty good as I drove it in here and got to work. I shifted through the gears again in the parking lot. It is substantially better than it was. Besides, wouldnt slack in the ring and pinion mean there would be a small clunk each time you push in the gas? Seems like you would be able to feel it, much like the u-joint.
It felt pretty good as I drove it in here and got to work. I shifted through the gears again in the parking lot. It is substantially better than it was. Besides, wouldnt slack in the ring and pinion mean there would be a small clunk each time you push in the gas? Seems like you would be able to feel it, much like the u-joint.
The klunk you are talking about happens when the diff or pinion bearings have play. Every time u accel. the diff. housing moves up and down with a small clunk.
Ring and pinion wear is different. It means that teeth and heel are worn due to lack of lubricant and consequent heat. It is like a worn bike chain and crown. This gives an eccessive rotational play that is exactly what you have.
08-07-2009, 10:38 AM
#29
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Year: 2000
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The more I drive it, the better it sounds so I am pretty convinced my clunk was a result of the bad u-joint and the grease-less driveshaft.
