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Old 02-16-2013, 09:04 PM   #1
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Knocking Noise

Out of the blue my 2000 sport started to knock when correcting from turns. Also when I go over a big bump. It did not do it this morning before work, after driving home it started. Any ideas?

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Old 02-16-2013, 09:52 PM   #2
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Check your U-joints and steering hardware

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Old 02-16-2013, 10:02 PM   #3
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Should I be looking fo cracking or what. Still new to the DIY repair scene.
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Old 02-16-2013, 10:06 PM   #4
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Cracks, sheared metal, rubbing, any signs of damage or fresh wear. I've never personally repaired a U-joint but that's what it sounds like it may be because it only happens when you turn or hit bumps. Just a thought.
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Old 02-16-2013, 10:23 PM   #5
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Thanks. I will check it out in the daylight.
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Old 02-16-2013, 10:31 PM   #6
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This video shows a really good explanation on seeing if your u-joints are bad.

Bad U-Joint? Here's How To Tell - YouTube
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Old 02-16-2013, 11:04 PM   #7
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Thanks for the link. The video makes this look like project I can handle. I will keep y'all updated.
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Old 02-16-2013, 11:20 PM   #8
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Post some pictures of anything you see if you can. It may help us, help you diagnose the problem.
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Old 02-18-2013, 01:16 AM   #9
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Was able to get a chance however briefly to look under my jeep. I could not see anything was wrong. I grabbed the drive shaft and shook it had a bit of play. Not sure if that's normal or not. The issue I have is that I would like to do it myself but don't have a bench press. I have seen other ways to do it. They are talking a good amount of snow mid week. Not sure if I will be able t do it myself between work and family. Will it hurt to drive t for a while? Is it easy enough to replace that I can do it myself in the limited time I have? I am not the best DIY out there..any help would be nice!
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Old 02-18-2013, 01:19 AM   #10
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Sway bar link maybe? I had the same problem with mine.
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Old 02-18-2013, 01:22 AM   #11
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How do I check the sway bar link?
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Old 02-18-2013, 01:34 AM   #12
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Quote:
Originally Posted by EnglishBulldog1
How do I check the sway bar link?
Depends on if you can determine which side the sound is coming from. The sway bar link is actually two pieces held by a rubber like piece. If it disconnects at any point it would most likely cause that sound. I will post a picture tomorrow if you haven't solved it yet
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Old 02-18-2013, 01:57 AM   #13
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Sound seems to be coming from the back left of the driver. My wife thinks it comes from the middle.
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Old 02-18-2013, 02:01 AM   #14
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Quote:
Originally Posted by EnglishBulldog1
Sound seems to be coming from the back left of the driver. My wife thinks it comes from the middle.
:/ well if it is in the rear I don't know. But still check the sway bar links. I will still post pictures
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Old 02-18-2013, 03:11 PM   #15
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That little rod next to the coil is the sway bar link.
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Old 02-18-2013, 03:45 PM   #16
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Try bouncing on each corner and listen for a knocking sound, it might help locate the source.
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Old 02-18-2013, 04:05 PM   #17
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If it is your front drive shaft you can disconnect it at the frt axel tie it up out of the way and drive it to see if it still does it. You can do this because the drive shaft free whls at the xfer case. This is how I found out that my frt cv joint was bad. Disconnect = noise stopped, reconnect = noise is back.
After jumping up (shocks)and down if it doesn't do it.
get a couple of buddies and rock the vehicle side to side like you were going around a corner (bad shock)
You can check your ball joints and whl bearings....jack one frt tire at a time up. Grab the top and bottom and try to wiggle it back and forth. If there is play it is either a ball joint or whl bearing.
If that doesn't do it jack the frt end up onto jack stands and cycle the steering back and forth looking for anything that wiggles.
Also, check motor, xsmn and xfer mounts.
Had the same thing happen going around turns and I thought it was the xfer mount and wound up being the rear universal.
I would be very careful until u figure out what it is!!!!!!!!

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Old 02-19-2013, 12:26 AM   #18
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Thanks I will play around before work Tuesday. How much of a risk/damage would these problems be/do to drive around for a while. Only reason I ask is because we have a big snow storm moving thru and I need the jeep to get to work. My other car is out of commission.
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Old 02-19-2013, 12:34 AM   #19
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If its just an unattached sway bar you're ok for light driving around town. If its a bad shock, you're ok it'll just be a rough ride. If its a failing U-joint, get ready to change your driver seat and pants out too because a failing U-joint is definitely not pleasant and can possibly cause your driveshaft to fail as well, definitely known to scare the sh*t out of people. Either way your jeep won't go anywhere until you take the rear shaft out and put it into 4Hi.
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Old 02-19-2013, 12:36 AM   #20
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And a failed U-joint in the driveshaft won't kill you, just scare you and temporarily make your jeep a front wheel drive vehicle (again if it is the rear).
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Old 02-20-2013, 01:12 AM   #21
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So driving around after work tonight I did not hear the noise again, till pulling in my driveway. I think I might start with the driveshaft one and go from there. From what I have read there not to expensive themselves, and I do it myself I can use what I would have spent on labor to replace them all.
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Old 02-23-2013, 01:24 AM   #22
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Update. I have not herd the noise since Saturday. The only thing I can think of is that it was in the mid fifties when I heard the noise and now it is in the 20's. Any ideas?
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Old 03-07-2013, 10:37 PM   #23
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The noise is back again! It was fairly warm this evening when I drove home. But when I went out later I did not hear it. Any thoughts?
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Old 03-07-2013, 11:18 PM   #24
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Could be a shock, then. The colder temperatures would thicken the oil and give it more resistance, which could be enough to make up for, or at least reduce the effect of, a blown seal.
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Old 03-08-2013, 12:53 AM   #25
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When I heard it this it sounded like it came from right below the drivers seat. Might try that U joint worst case is I am out like 20 buck or so ( just a estimate) and a few hours of my time.
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Old 03-08-2013, 01:09 AM   #26
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I had a similar issue and ended up being this...http://www.4x4xplor.com/T-CaseTSB.html
If you haven't used this site before I would definately bookmark it for future reference. There is a ton of great write ups that have helped me out many times. Let us know what you find out.
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Old 03-08-2013, 03:13 PM   #27
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Could possibly be a bad exhaust pipe hanger. look along your exhaust to see if it is contacting the frame or other metal parts.
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Old 03-08-2013, 05:24 PM   #28
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Quote:
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Could possibly be a bad exhaust pipe hanger. look along your exhaust to see if it is contacting the frame or other metal parts.
Good idea. Check where the exhaust pipe crosses the back of the skid plate, I had contact there after a weld failed.
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Old 03-08-2013, 07:29 PM   #29
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Check the 4wd linkage. Grab it and move it around to see if it makes the same sound you hear. Mine has been making a clunking/popping/knocking sound every time i hit a bump for a few months now and drives me insane. One day I'm gonna fix it.
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Old 11-30-2013, 12:10 AM   #30
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It's back. I have not heard the noise all summer but now it's cold and damp I am hearing it again.

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