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Old 01-30-2008, 08:49 AM   #1
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Help: knocking sound in front when I turn

Hey Guys,

I am new to the forum and also new to the Jeep world. I now have a 98 Wrangler Sport with 4" suspension lift and 33"s. Recently, there has been a knocking sound in my front end when I turn either way. It does it in both 2wd and 4wd. Can anyone diagnose what this might be. The Jeep has power steering and the steering gearbox has always leaked, but I keep the fluids topped off. Can someone tell me how to check the front end parts to find my problem.

Thanks for any help

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Old 01-30-2008, 12:54 PM   #2
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Need more info.

Is this sound noticed at low speed (turns in parking lots, driveways, etc) or high speed?

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Old 01-30-2008, 02:54 PM   #3
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also is it just when u turn the wheel all the way ot the right or left, or when you just turn it a little bit or the whole way?

first thing i would do would be to check the control arms and look to see if the tire has been rubbing up against them, the CA's are what hold the axle to the frame and mount underneath the axle and go back towards the engine and up ot the frame, they should be right in behind the drum of the tire
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Old 01-30-2008, 03:57 PM   #4
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Alright, this sound starts when I begin turning the wheel left or right, it doesn't have to be cut all the way. The sound can be heard in parking lots and at any low speed. I have not noticed it at high speeds, I believe thats because I am not turning very sharply. Two weeks ago, there was no knocking and the tires do not rub.
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Old 01-30-2008, 04:18 PM   #5
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Last week I found a loose nut up under the front end. There is a bracket with two nuts facing the front. This bracket connects one of the steering mechanisms to a drop down from the steering gearbox. We tightened the nut and put another lock nut on top of it. It was a few days after this adjustment that the popping/ flexing sound began. I tried to attach a picture of this but could not get the resolution low enough for it to load. I hope this makes sense. Thanks for the help.
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Old 01-30-2008, 04:23 PM   #6
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hmm so somethign to do with the DPA somehow then is my guess, too bad i dont understand how it all works
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Old 01-30-2008, 04:38 PM   #7
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check front axle u-joints these will be located directly between ball joints where each wheel pivots as it turns from side to side.move inner axle and see if there is slack in one of the joints or if you can see rust dust coming out of one of the cups. around here this is common problem........good luck
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Old 01-30-2008, 06:14 PM   #8
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check front axle u-joints these will be located directly between ball joints where each wheel pivots as it turns from side to side.move inner axle and see if there is slack in one of the joints or if you can see rust dust coming out of one of the cups. around here this is common problem........good luck
X2
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Old 01-30-2008, 09:19 PM   #9
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X2
X 3 its a jeep thing check the outer tie rod end and ball joints upper and lower something is got to be loose in that front end
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Old 01-30-2008, 09:29 PM   #10
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my vote goes to the trac bar, have someone move the wheel back and forth while you look at the steering joints. if you see anything with too much movement thats usually your problem. if the steering is tight then look at the ujoints in the axle shafts.
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Old 01-31-2008, 09:07 AM   #11
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Well, the verdict is in. This morning a mechanic friend of mine was able to get a look at it while the tires were being cut back and forth. There are two stabalizer bars on my front end. One sits low by the axle and one sits high and runs at an angle. At the end one of the bushings has worn out and its pivoting metal to metal. I am being told that I will have to buy a new stabilizer bar. Is this true? Why could I not just replace the bushing and be done with it. Has the wear on the pivot point made the bar itself go bad?
Also, this particular guy has worked on Jeeps at a local dealership for 6 years and he is telling me he would take it off and leave it off. Any opinions?
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Old 01-31-2008, 04:08 PM   #12
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My jeep only runs one stabilizer and is fine. I have heard that two is overkill and not needed. It must be an aftermarket setup, so you could probably get away with just running the stock stabilizer and be fine, assuming it is the aftermarket one that has the failed bushing. I however do not have a 4 inch lift and only run 32 in tires on a BB. Take it off and see how it drives. It is the easiset and cheapest solution i would try first.

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