Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

grinding noise when accelerating

Old May 18, 2010 | 04:39 PM
  #16  
jake149's Avatar
Thread Starter
Member
 
Joined: Dec 2009
Posts: 144
Likes: 0
From: chesterfield, michigan
Year: 2001
Model: Cherokee
Engine: 4.0 6 cyl.
Default

ive heard from a neighbor that it could be a bearing in the transfercase, anybody hear of that before?
Reply
Old May 18, 2010 | 05:31 PM
  #17  
AndyADD's Avatar
Member
 
Joined: Apr 2010
Posts: 173
Likes: 0
From: KC KS
Year: 1989
Model: Cherokee
Engine: 4.0L HO
Default

Was the noise like this?


I replaced my transmission mount and it still makes the noise when I accelerate.
Reply
Old May 18, 2010 | 05:46 PM
  #18  
jake149's Avatar
Thread Starter
Member
 
Joined: Dec 2009
Posts: 144
Likes: 0
From: chesterfield, michigan
Year: 2001
Model: Cherokee
Engine: 4.0 6 cyl.
Default

no only does it when i hit the gas, nothing while idling or sitting.
Reply
Old May 19, 2010 | 03:01 PM
  #19  
miglia-spyder's Avatar
Senior Member
 
Joined: Mar 2009
Posts: 554
Likes: 1
From: Grand Rapids, Michigan
Year: 2000
Model: Cherokee
Engine: 4.0
Default

Originally Posted by AndyADD
Was the noise like this?

http://www.youtube.com/watch?v=dgKO4T7xrp8

I replaced my transmission mount and it still makes the noise when I accelerate.
Dude TAKE YOUR INSPECTION COVER OFF! Your Bolts on your flywheel are loose!!!
Reply
Old May 20, 2010 | 08:15 PM
  #20  
Skeletool's Avatar
Newbie
 
Joined: May 2010
Posts: 13
Likes: 0
From: Camas, WA
Year: 1998
Model: Cherokee
Engine: 4.0L Strainght 6
Default

I get a similar noise in my 98'. It makes a noise that sounds like someone in the next room using a hammer drill on a concrete floor. (best I can describe it). But it only does it while climbing a hill or accelerating between the speeds of 53 and 58 mph. Never at any other speed. As soon as I let off the gas or push in the clutch it goes away. Also, it doesn't matter if it's 3rd, 4th, or 5th gear, and doesn't change frequency with engine RPM. It sounds like it is comming from somewhere forward of the firewall. So I figured it must be drive train related.
Reply
Old May 20, 2010 | 08:24 PM
  #21  
kohlers89XJ's Avatar
Member
 
Joined: Nov 2009
Posts: 199
Likes: 0
From: Dover, PA
Year: 1989
Model: Cherokee
Engine: straight 6 4.0
Default

skeletool:
mine did the same thing but between 30-35 and it ended up being a driveshaft u-joint not sure if its the same for you but worth checking because if it break it sucks sittin in a parking lot waitin for your uncle to bring the trailer ha
Reply
Old May 21, 2010 | 07:22 AM
  #22  
miglia-spyder's Avatar
Senior Member
 
Joined: Mar 2009
Posts: 554
Likes: 1
From: Grand Rapids, Michigan
Year: 2000
Model: Cherokee
Engine: 4.0
Default

Originally Posted by Skeletool
I get a similar noise in my 98'. It makes a noise that sounds like someone in the next room using a hammer drill on a concrete floor. (best I can describe it). But it only does it while climbing a hill or accelerating between the speeds of 53 and 58 mph. Never at any other speed. As soon as I let off the gas or push in the clutch it goes away. Also, it doesn't matter if it's 3rd, 4th, or 5th gear, and doesn't change frequency with engine RPM. It sounds like it is comming from somewhere forward of the firewall. So I figured it must be drive train related.
Motor mount.
Reply
Old May 21, 2010 | 07:28 AM
  #23  
miglia-spyder's Avatar
Senior Member
 
Joined: Mar 2009
Posts: 554
Likes: 1
From: Grand Rapids, Michigan
Year: 2000
Model: Cherokee
Engine: 4.0
Default

Originally Posted by lurk520
what kind of job is installing a new trans. mount?
Not Bad at all... I did mine in about an hour when i was taking my time. Support the tranny, unbolt the old mount with the 4 bolts on the bottom and inside of the cross member. Then remove the cross member bolts and studs from both sides (the studs may break, so PB Blast them for a couple days). Then there are 2 18mm bolts the bolt the mount to the bottom of the T-case. Remove those and install the new mount.

Make sure you get 2 new bolts to replace the 2 studs you took out.
Reply
Old May 21, 2010 | 10:59 AM
  #24  
Skeletool's Avatar
Newbie
 
Joined: May 2010
Posts: 13
Likes: 0
From: Camas, WA
Year: 1998
Model: Cherokee
Engine: 4.0L Strainght 6
Default

Originally Posted by kohlers89XJ
skeletool:
mine did the same thing but between 30-35 and it ended up being a driveshaft u-joint not sure if its the same for you but worth checking because if it break it sucks sittin in a parking lot waitin for your uncle to bring the trailer ha
Good to know. Was yours the front driveshaft?
Reply
Old May 21, 2010 | 12:35 PM
  #25  
davida's Avatar
Seasoned Member
 
Joined: May 2009
Posts: 296
Likes: 1
From: Wy & OK
Year: 83 CJ7 & '96 XJ & '97 XJ
Model: Cherokee
Engine: 258ci, 4.0 & 4.0
Default

Standerd or Automatic, if standerd the sound is most likey your throw out bearing.
Reply
Old May 21, 2010 | 01:18 PM
  #26  
spittinimage's Avatar
Member
 
Joined: Mar 2010
Posts: 154
Likes: 0
From: Emmett, Idaho
Year: 96
Model: Cherokee
Engine: 4.0L
Default

bottle jack and a few bolts not real hard.
Reply
Old May 22, 2010 | 02:54 AM
  #27  
lurk520's Avatar
Senior Member
 
Joined: Apr 2010
Posts: 504
Likes: 1
From: Tucson, AZ
Year: 2002
Model: Grand Cherokee
Engine: 4.0 I6
Default

Mine isn't like the Youtube sound at all. It's intermittent when I accelerate through first gear (auto trans), then it goes away.
Reply
Old May 22, 2010 | 05:47 PM
  #28  
lurk520's Avatar
Senior Member
 
Joined: Apr 2010
Posts: 504
Likes: 1
From: Tucson, AZ
Year: 2002
Model: Grand Cherokee
Engine: 4.0 I6
Default

I FIGURED IT OUT!!!!! It's the mechanical fan (not the electrical), scraping against the bottom of its shroud. The top of the shroud is bolted on, but on the bottom it just kinda hangs loose, so sometimes when I accelerate the bottom goes back and the fan scrapes it, BINGO!!!!
Reply
Old May 22, 2010 | 09:19 PM
  #29  
mwdouglas's Avatar
CF Veteran
 
Joined: Feb 2010
Posts: 1,010
Likes: 0
From: gloucester va
Year: 1990
Model: Cherokee
Engine: 4.0
Default

glad to hear you found it
Reply
Old May 24, 2010 | 10:43 AM
  #30  
Skeletool's Avatar
Newbie
 
Joined: May 2010
Posts: 13
Likes: 0
From: Camas, WA
Year: 1998
Model: Cherokee
Engine: 4.0L Strainght 6
Default

I did a 1" TC Drop this weekend, and it took care of the noise.
Reply

Thread Tools
Search this Thread

All times are GMT -5. The time now is 12:22 PM.