HELP - Front End Noise (over sharp bumps) - JeepForum.com

 
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post #1 of 10 Old 01-18-2011, 04:31 PM Thread Starter
jkrosky
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HELP - Front End Noise (over sharp bumps)

2005 Jeep Grand Cherokee Limited
5.7L Hemi, Quadra-Drive

I just bought this Jeep used with 33,000 miles and it looks like new. It drives great, runs great and looks to be taken very good care of.

After drving it for a few days now i've started to notice a somewhat loud thump noise when going over sharp bumps such as a raise or drop in the pavement or recessed manhole lid (20-40 mph). I don't hear anything when going over larger dips or speedbumps when theres more overall movement in the suspension.

I'm wondering if this is a standard occurance or if its somthing I should look into further? Could this Jeep just have a stiffer suspension than other SUVs I've owned? Any feedback would be appreciated.

Thanks,
Jeff


Last edited by jkrosky; 01-18-2011 at 04:47 PM.
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post #2 of 10 Old 01-18-2011, 04:43 PM
08Titan
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Wow, congratulations on having the only 5.9 liter hemi ever made! LOL Just joking.

A lot of guys on here have had their front swaybar bushings go bad (my wifes are too) and that causes asharp clunking noise and feel when going over bumps because the swaybar is just clunking around in the mount. It's a fairly cheap and easy fix. There's a writeup on it here on this board somewhere. Most of the 05's (my wifes included) need the new updated brackets too to fit the new bushings. You can get all the parts at rockauto pretty cheap.

2007 JK unlimited rubicon, red rock crystal pearlcoat, rc 2.5" spacer lift, 35x12.50 goodyear mtr/k mounted on black 15x8" mb72's. (Mine)

2005 WK Limited 4.7, QTII, Midnight blue pearlcoat. (Hers)
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post #3 of 10 Old 01-18-2011, 04:46 PM Thread Starter
jkrosky
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HAHA, typo... I'm an idiot. Thanks for the info.
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post #4 of 10 Old 01-18-2011, 04:53 PM
08Titan
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No problem man, everybody makes mistakes. You might also want to check your balljoints because they are also kinda know for going bad on these jeeps. You can jack up your front end (tires have to be off the ground) and grab the top and bottom of the tire (12 o'clock and 6 o'clock posistion) and push/pull on the tire. There should be no movement. If there is your balljoints may be bad also. It's probably the swaybar bushings though. Not the endlinks but the actual bushings where it mounts to the front crossmember.

2007 JK unlimited rubicon, red rock crystal pearlcoat, rc 2.5" spacer lift, 35x12.50 goodyear mtr/k mounted on black 15x8" mb72's. (Mine)

2005 WK Limited 4.7, QTII, Midnight blue pearlcoat. (Hers)
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post #5 of 10 Old 01-18-2011, 05:11 PM Thread Starter
jkrosky
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Gotcha. I'll check the ball joints first. Let me know if you can find that post for replacement of the sway bar bushings. I'm still new to the forum. What all would you suggest to order from Rock Auto for this repair?
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post #6 of 10 Old 01-18-2011, 05:30 PM
Budasac
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X2 on the front sway bushings. Mine went at 30,000 and again at 75,000. I know they changed the design of the bushings slightly when I went to change them the second time.. I was able to get the bushings from Napa but had to go to the dealer for the new brackets. I'd be willing to bet money that 's your problem. It seems to be pretty common.
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post #7 of 10 Old 01-18-2011, 05:43 PM
08Titan
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Quote:
Originally Posted by jkrosky View Post
Gotcha. I'll check the ball joints first. Let me know if you can find that post for replacement of the sway bar bushings. I'm still new to the forum. What all would you suggest to order from Rock Auto for this repair?
Here ya go!

http://www.jeepforum.com/forum/f67/f...oints-1128317/

2007 JK unlimited rubicon, red rock crystal pearlcoat, rc 2.5" spacer lift, 35x12.50 goodyear mtr/k mounted on black 15x8" mb72's. (Mine)

2005 WK Limited 4.7, QTII, Midnight blue pearlcoat. (Hers)
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post #8 of 10 Old 01-19-2011, 10:41 AM Thread Starter
jkrosky
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Easy enough. I'll let you all know if this fixes it. Thanks for the help.
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post #9 of 10 Old 01-21-2011, 11:28 AM Thread Starter
jkrosky
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I'm going to replace the sway bar bushings and brackets this weeked. I wondered if anyone has information and/or pics of the sway bar end links and how to replace them. I understand they are an easy/cheap fix as well. Thinking I may as well do them both at the same time. Thanks!
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post #10 of 10 Old 02-03-2011, 10:48 AM Thread Starter
jkrosky
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Ok, I replaced the sway bar bushings and brackets.

The brushings they gave me at the dealership where a bit different than the blue ones described in the forum listed above. They did have the ridge down the middle of them but they were black and had the slit in at 12 oclock directly above the flat side. They also seemed to be a bit oversized. Really had to crank down the bolts to get them seated. The slit at the top never really closed up after tightening them.

The old ones looked fine. Rubber was still good, no corrotion or anything. It seems to have quieted the clunking noise a good deal. It still seems a bit loud to me, but I'm not as worried about it. If anyone has any other ideas please let me know.

Thanks!
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bump , noise , sound , suspension , tires

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