Knocking sound upon acceleration
#1
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Model: Cherokee
Knocking sound upon acceleration
Ok here is my problem, after installing a 4.5 RE lift with upper and lower control arms, and quite a bit if wheeling if I'm going up a hill in 2 wheel drive it sounds like something knocking hard on the floor pan. If I'm sitting still at a stop sign and accelerate slow or fast i have the same sound. once i put it into 4 wheel drive the sound goes away no matter how i accelerate. any ideas on what this could be? by the way its a 98 sport 4.0, there are no sounds while just sitting still idling, only upon acceleration. thanks in advance for your help!!
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Year: 2000
Model: Cherokee
Engine: 4.0
Check your tranny mount, could be twisting a little in 2wd, but in 4wd with both twisting it might not do it. Also look for some kind of marks being left behind from whats hitting
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Year: 98'
Model: Cherokee
Engine: 4.0L I6
I'm also having a similar problem. My noises started after i installed a t case drop. While i was installing, the jack supporting the crossmember failed and it was left hanging on its own. Would the mount be worn out or would it just be loose? Or both?
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#8
knock knock....who's there?
Did this knocking problem ever get resolved? I know its been awhile.
I have a 2001 xj with 4.5" lift which has the same knocking under acceleration but only turning right????
The noise is similar to that of a worn drive shaft on a front wheel drive, but sounds like its coming from the rear, "a rapid knock,knock,knock that stops after a few seconds?
If it was uj's, surly this would happen during left and straight acceleration also?
Any thoughts?
Cheers.
I have a 2001 xj with 4.5" lift which has the same knocking under acceleration but only turning right????
The noise is similar to that of a worn drive shaft on a front wheel drive, but sounds like its coming from the rear, "a rapid knock,knock,knock that stops after a few seconds?
If it was uj's, surly this would happen during left and straight acceleration also?
Any thoughts?
Cheers.
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pantallica20@aol.com
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
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10-01-2015 02:58 PM
Charles Greening
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