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XJ Ask the Question Thread
I think I'm hearing some grinding in the rear. I jus recently got my right rear wheel bearing n seal replaced. My buddy was riding with me n I asked him if he heard it n he first thought it was a window cracked or something so thats the kinda noise it is n it isn't a cracked window any ideas wat it could b???
Senior Member
Joined: Dec 2010
Posts: 848
Likes: 0
From: Pittsburgh, PA
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Originally Posted by XJmotard
Haha...what do ya do when its already emptied every pocket lol...
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Well first, jeeps run normal at 210 electric fan on around 215-218. Normal oil pressure is like 40-55(60) driving and 20-30 sitting. Jeeps use 10w-30 or 5w-30. Never seen someone use 20-50. Maybe yes but if so then someone else here will have to confirm that
Edit: get the code read at any auto store and post codes
Edit: get the code read at any auto store and post codes
On another note, I changed my spark plugs and wires today and noticed I have oil slowly leaking from my oil cap. I've read this could be a PVC valve issue. I'm going to check my hoses for pinches and my air filter (even though I just changed it recently and didn't find any traces of oil), anything else I should look for?
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Originally Posted by AdvanZ33
Thanks for the info. That's what I wanted to know.
On another note, I changed my spark plugs and wires today and noticed I have oil slowly leaking from my oil cap. I've read this could be a PVC valve issue. I'm going to check my hoses for pinches and my air filter (even though I just changed it recently and didn't find any traces of oil), anything else I should look for?
I checked my oil level earlier today to see if I was burning oil from my previous concern and while I was under the hood I cleaned the valve cover from oil and pollen. Later in the day when I went to change the plugs and wires the oil was back. Are you thinking of blow by?
CF Veteran
Joined: Nov 2010
Posts: 2,139
Likes: 1
From: chillicothe, OH
Year: 1991
Model: Cherokee
Engine: 4.0
Has anyone else experienced this??????? Done the search's and all that. Temps still going up. Here is where i stand.
Rig runs fine at idle/low speeds. Doesn't warm up till I hit hwy speeds.
Dunno what to do?
Prob will replace radiator, water pump, fan clutch, and coolant sensors for both fan and guage to be safe.
Or do i just start with sensors first.
Could a sensor do ALL OF THIS TO MEEEEE?!?!?!?!?!?!?!?!?!
I WANNA WHEEL NOT WRENCH!!!!!!!!!!!!!!!!!!!
Praying someone else has had this pain and can help me with mine.
Thanks for the help, listening to me whine, and bearing my burdens.
Rig runs fine at idle/low speeds. Doesn't warm up till I hit hwy speeds.
- Temps climbing to the brink of red if allowed when at hwy speeds.
- Runs fine in cool weather and at idle/lower speeds. Will do that all day no prob. Won't even hit 210* sitting there.
- Again - doesn't get hot until greater speeds/demand on system.
- Flushed with hose, no actual flush mat'l, new tstat, new rad cap.
- Washed off radiator w/ pressure washer at car wash.
Dunno what to do?
Prob will replace radiator, water pump, fan clutch, and coolant sensors for both fan and guage to be safe.Or do i just start with sensors first.
Could a sensor do ALL OF THIS TO MEEEEE?!?!?!?!?!?!?!?!?!

I WANNA WHEEL NOT WRENCH!!!!!!!!!!!!!!!!!!!
Praying someone else has had this pain and can help me with mine.
Thanks for the help, listening to me whine, and bearing my burdens.
Last edited by Disoriented Hillbilly; Apr 7, 2011 at 09:28 PM.
Seasoned Member
Joined: Sep 2010
Posts: 329
Likes: 0
From: Tallahassee, FL
Year: 1999
Model: Cherokee
Engine: 4.0L
I'm having what might be a serious problem.. This could be impossible to diagnose with just my poor description of what's happening but I'll try anyway.
For the last two weeks (and no "two weeks" does not mean 6 months) I've noticed a chattering sound coming from the engine. I can hear it when I'm idling and when I'm driving pretty slow. It seems to be consistent and acceleration or nothing that I can do seems to effect the frequency of the chatter, loudness, etc. I popped the engine finally the other day and noticed the crank shaft pulley seems to be wobbly while the jeep is running. Could these be linked in any way?? Does anyone have any more insight? Thank you!
For the last two weeks (and no "two weeks" does not mean 6 months) I've noticed a chattering sound coming from the engine. I can hear it when I'm idling and when I'm driving pretty slow. It seems to be consistent and acceleration or nothing that I can do seems to effect the frequency of the chatter, loudness, etc. I popped the engine finally the other day and noticed the crank shaft pulley seems to be wobbly while the jeep is running. Could these be linked in any way?? Does anyone have any more insight? Thank you!
Originally Posted by jeepcherokee99
I think I'm hearing some grinding in the rear. I jus recently got my right rear wheel bearing n seal replaced. My buddy was riding with me n I asked him if he heard it n he first thought it was a window cracked or something so thats the kinda noise it is n it isn't a cracked window any ideas wat it could b???
CF Veteran
Joined: May 2010
Posts: 1,680
Likes: 5
From: Western Michigan
Year: 1993
Model: Grand Cherokee
Engine: 4.0l inline 6
Boomroasted, Is the engine throwing any codes? Off chance noise could be from the flex plate, try checking loose bolts and cracks. Is the pully loose? If your ideling and have the hood open can you tell where about the engine the noise is comeing from?
Seasoned Member
Joined: Sep 2010
Posts: 329
Likes: 0
From: Tallahassee, FL
Year: 1999
Model: Cherokee
Engine: 4.0L
Also, I just remembered this and it could possibly be related.. If I'm driving through an area with my windows down with objects and buildings close to the road I can hear a high pitched jingling noise when I'm riding on bumpy asphalt like something is definitely loose.
And thank you for the quick response. I love this forum.
CF Veteran
Joined: May 2010
Posts: 1,680
Likes: 5
From: Western Michigan
Year: 1993
Model: Grand Cherokee
Engine: 4.0l inline 6
Start by taking the fan belt off and check the pullys. If there loose you can tighten them. Also while the belt is off, turn the different pullys by hand to check for grinding/binding.
The flex plate is where the engine connects to the trans. There is an inspection plate, remove the plate and you can veiw the flex plate( you'll want a flashlight for this) your looking for hair line cracks around the bolt holes, also for loose bolts.
The flex plate is where the engine connects to the trans. There is an inspection plate, remove the plate and you can veiw the flex plate( you'll want a flashlight for this) your looking for hair line cracks around the bolt holes, also for loose bolts.
Member
Joined: Apr 2010
Posts: 198
Likes: 0
From: Newport, NC
Year: 1998
Model: Cherokee
Engine: 4.0 L
CF Veteran
Joined: Feb 2011
Posts: 3,500
Likes: 0
From: Long Beach, Ca
Year: 2000
Model: Cherokee
Engine: 4.0 I6
I don't believe the motor is directly grounded to the body. Should I ruin a dedicated ground wire from the engine to the chassis?? Well this help with alternator noise in the cb?
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