Clunk in the rear of Jeep - JeepForum.com

 
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post #1 of 13 Old 03-21-2002, 07:59 PM Thread Starter
glennv
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Post Clunk in the rear of Jeep

Here is the deal guys. I have a clunk in the rear which happens only when I punch it while turning right of left. It feels like a motor or trans mount but my mechanic says they are fine. The right rear brakes are toast, needing new shoes, drum, cylinder and lines. Could this be the prob. Any other possible causes? It is being fixed but ask only because I am anxious while waiting for him to get it done. Also, he says the job could be @ $400. sound right? Thanks


2002 Sport: I6, 4.56 gears, SYE, RE 3.5", 305 BFF MTs.5-spd,d30/d44.
2004 Grand: I6, wife's
1998 XJ: My daily driver. I6




"The Second Amendment is not about duck hunting, and I know I'm not going to make very many friends saying this, but it's about our right, all of our right to be able to protect ourselves from all of you guys up there." - Dr. Suzanna Gratia Hupp, appearing before Representative Charles Schumer's committee hearings on the assault weapons ban
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post #2 of 13 Old 03-22-2002, 08:29 AM
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that clunking is your rear diff! More then likely you have some striped gears! it happend to my friends Grand same problem you have! I would be willing to bet its the rear diff take it apart and look at the gears.

Sorry about the bad news, but good luck

/\/\/\/\ is here!!!!

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"ITS A JEEP THING, DONT TRY TO FOLLOW YOU MIGHT GET STUCK."
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post #3 of 13 Old 03-22-2002, 03:41 PM Thread Starter
glennv
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any idea the cost?

2002 Sport: I6, 4.56 gears, SYE, RE 3.5", 305 BFF MTs.5-spd,d30/d44.
2004 Grand: I6, wife's
1998 XJ: My daily driver. I6




"The Second Amendment is not about duck hunting, and I know I'm not going to make very many friends saying this, but it's about our right, all of our right to be able to protect ourselves from all of you guys up there." - Dr. Suzanna Gratia Hupp, appearing before Representative Charles Schumer's committee hearings on the assault weapons ban
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post #4 of 13 Old 03-22-2002, 04:30 PM
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well, first take a look at your rear diff. the most you look at spending there is time and a few $'s for diff fluid. If there is something wrong the you are looking at about $100 (do it yourself) and probably around $400 for other.

Good luck with it all

/\/\/\/\ is here!!!!

2000 XJ Jeep sport stock
"ITS A JEEP THING, DONT TRY TO FOLLOW YOU MIGHT GET STUCK."
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post #5 of 13 Old 03-22-2002, 06:16 PM Thread Starter
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Now should I hear this all the time, or just when I start off? I really have to work at it to get it to make the sound. I can almost feel it under the shifter. Actually, I was shocked when my mechanic said the tranny mount was fine. should I ask him to look again? I really only makes the noise if I punch it or hit large bumps while giving it the gas.

2002 Sport: I6, 4.56 gears, SYE, RE 3.5", 305 BFF MTs.5-spd,d30/d44.
2004 Grand: I6, wife's
1998 XJ: My daily driver. I6




"The Second Amendment is not about duck hunting, and I know I'm not going to make very many friends saying this, but it's about our right, all of our right to be able to protect ourselves from all of you guys up there." - Dr. Suzanna Gratia Hupp, appearing before Representative Charles Schumer's committee hearings on the assault weapons ban
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post #6 of 13 Old 03-24-2002, 09:55 PM
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This still could be your rear diff remember your driveshaft goes into your trany! So you would feel it there also. and by punching it the gears move faster so if the gears are F**KED up then they are spining till they ketch a good gear clean and then BOOM. I would look at the rear diff inside i am telling you its worth the time and money you will spend putting diff fluid if its not!

Good hunting

/\/\/\/\ is here!!!!

2000 XJ Jeep sport stock
"ITS A JEEP THING, DONT TRY TO FOLLOW YOU MIGHT GET STUCK."
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post #7 of 13 Old 03-24-2002, 10:29 PM
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It may not be the gears in the rear diff... After my wreck, the few times I've driven my jeep around, I hardly ever hear the clunk any more. Before the accident, every time I'd let off the gas, my jeep would jerk twice with a knock in the rear. It would also jerk sometimes when accelorating. Now, it has only jerked once when I let off the accelorator. However, I do have an even louder clunck in the rear when I shift into to gear or my rear does somthing funny(like driving off the driveway into the grass...)
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post #8 of 13 Old 03-24-2002, 10:50 PM
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mine did that whilst towing, hard tuen to the right, and it sounded like the driveshaft was banging, and it turned out it had the wrong oil in the back diff (some dick before I bought it had put engine oil in there...go figure his mentality), and was overheating, try changing to asyntehtic oit in the back diff, it did the trick on my 93 Cherokee
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post #9 of 13 Old 03-24-2002, 10:50 PM
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mine did that whilst towing, hard tuen to the right, and it sounded like the driveshaft was banging, and it turned out it had the wrong oil in the back diff (some dick before I bought it had put engine oil in there...go figure his mentality), and was overheating, try changing to asyntehtic oit in the back diff, it did the trick on my 93 Cherokee
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post #10 of 13 Old 03-25-2002, 09:40 AM
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Hey Darren,

That clunk you are hearing now is your springs/hangers rubbing your unibody/frame. Remeber, they are stuffed up into your floor right now, if you look you will see them rubbing in there, so it makes a horrible noise when they flex and when you romp the gas. That will disappear after they fix it. See my reply to your "Ouch" post. <img border="0" title="" alt="[Wink]" src="wink.gif" />
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post #11 of 13 Old 03-25-2002, 07:00 PM
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hey yall, its seems that i may have a similar problem. when i go into reverse it clunks a little. really the worst times are when i back into a parking space and am turning while backing. the clunck is not there in forward gears, just reverse. any ideas? i havent really checked anything yet, but i saw this post and decided to pipe right on in. Thanks!
jairus

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post #12 of 13 Old 03-25-2002, 10:27 PM
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The problem sounds alot like what I'm having now after the wreck. Check to see if your springs/hangers are rubbing.

Hey, drive it off a little drop(like into the yard) and see if you get a loud bang. I think about every time I drove my jeep back into my new parking place(the yard) I hear the bang when it drops off.
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post #13 of 13 Old 03-26-2002, 05:36 PM Thread Starter
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Taking a closer look I mine, I find that it only does it when I stop on a hill and then lay on the gas. Any ideas?

2002 Sport: I6, 4.56 gears, SYE, RE 3.5", 305 BFF MTs.5-spd,d30/d44.
2004 Grand: I6, wife's
1998 XJ: My daily driver. I6




"The Second Amendment is not about duck hunting, and I know I'm not going to make very many friends saying this, but it's about our right, all of our right to be able to protect ourselves from all of you guys up there." - Dr. Suzanna Gratia Hupp, appearing before Representative Charles Schumer's committee hearings on the assault weapons ban
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