LOUD grinding noise
01-08-2013 | 11:31 AM
#18
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Joined: May 2008
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From: +34° 25' 35.67", -81° 21' 12.04"
Year: 1993
Engine: 4.0
Ok new plan. Do all of the stuff above but, if you get grinding with the tire on and off. Then with the tire off and it still grinds, try removing the caliper. Then try to spin it with the caliper off. If you get the grinding with the caliper off, it is most likely the bearing. If you get the grinding with the caliper on and the wheel off it is most likely the caliper. Hope this makes sense.
01-08-2013 | 07:58 PM
#19
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Joined: Dec 2012
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From: Port Barrington, illinois
Year: 1998
Model: Cherokee
Engine: I-6 4.0 litre
So have it on jack stands. I cant get it to make the grinding noise again. I grabbed the u joint and I cant tell if anything is loose. I grabbed the tire at 9 and 3 and seams pretty tight. 12 and 6 has a small amout of play. So I guess its the wheel bearing? Can I pick everyones brains on diagnosing the u joint. What to look for etc.
01-08-2013 | 08:14 PM
#21
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Joined: May 2011
Posts: 1,067
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Year: 99
Model: Cherokee
Engine: 4.0
As ****** said check to see if there is any signs of rubbing on the inside of the rim. Also check the outside of the caliper for signs of rubbing. You should be able to spin the rotor with the tire off. See if you get rubbing with the tire off while spinning the rotor.
01-08-2013 | 09:15 PM
#24
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From: Port Barrington, illinois
Year: 1998
Model: Cherokee
Engine: I-6 4.0 litre
01-08-2013 | 09:48 PM
#26
Thread Starter
Junior Member
Joined: Dec 2012
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From: Port Barrington, illinois
Year: 1998
Model: Cherokee
Engine: I-6 4.0 litre
01-08-2013 | 10:06 PM
#27
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Joined: May 2011
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Year: 99
Model: Cherokee
Engine: 4.0
I do not really think it is your universal joints. If you can see them, look for a rusty colored powder (it is rust actually) or dry, cracked, black stuff. That is the grease that got nasty. That is a good visual. A good way to tell by driving it would be to make a hard right and a hard left 360 degree turn in 2wd on dry pavement. If they are bad they will crunch or pop. It could also shuck or shimmy like it is in 4wd on dry pavement.
01-08-2013 | 10:24 PM
#28
Thread Starter
Junior Member
Joined: Dec 2012
Posts: 45
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From: Port Barrington, illinois
Year: 1998
Model: Cherokee
Engine: I-6 4.0 litre
I do not really think it is your universal joints. If you can see them, look for a rusty colored powder (it is rust actually) or dry, cracked, black stuff. That is the grease that got nasty. That is a good visual. A good way to tell by driving it would be to make a hard right and a hard left 360 degree turn in 2wd on dry pavement. If they are bad they will crunch or pop. It could also shuck or shimmy like it is in 4wd on dry pavement.
it does all of the above on a hard left. i did that last night and pissed off the neighbors
01-08-2013 | 10:35 PM
#30
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Joined: May 2011
Posts: 1,067
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Year: 99
Model: Cherokee
Engine: 4.0
Moog is good. You are opening up a can of worms asking that question. A lot of people have their own strong opinions. I prefer greasable ones as opposed to non greasable ones. Do you have a mechanic you can trust to help you with a final diagnosis? How mechanical are you?