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02-11-2011, 12:16 PM
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#1
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Registered User
Join Date: Feb 2011
Location: Lexington, KY
Posts: 6
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2000 XJ, grinding sound at hard acceleration from a stop. You can hear it and feel it under all floor boards. It does stop about 5 seconds after take off. I have replaced U-joints, bearings, etc., also checked the motor mounts, changed gear oil and trans fluid. I cannot figure out what it is. Could it be something with the t-case?
Thanks for your help!
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02-11-2011, 12:32 PM
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#2
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Registered User
Join Date: Dec 2008
Location: Ord, Nebraska
Posts: 288
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what bearings were changed?
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02-11-2011, 12:32 PM
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#3
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Registered User
Join Date: Feb 2009
Location: Sweden, Skane
Posts: 377
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hehe,i had the same thing,turns out,my tail pipe was hidding towning hitch......just my 2cents.....
__________________
sold my yj,got myself an xj i always wanted!
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02-11-2011, 12:41 PM
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#4
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Registered User
Join Date: Dec 2008
Location: Ord, Nebraska
Posts: 288
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Quote:
Originally Posted by need4speedtonka
hehe,i had the same thing,turns out,my tail pipe was hidding towning hitch......just my 2cents.....
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did you mean, hitting the towing hitch?
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02-11-2011, 05:48 PM
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#5
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Registered User
Join Date: Jan 2007
Location: Roanoke, VA
Posts: 1,247
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Does it go away in 4wd? Mine does the same thing its an 87 and has done it since I got it about 9 years ago. I haves greased and add fluid to everything but it hasn't gone away so my guess is the t-case or Trans or torque converter.
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02-12-2011, 06:55 AM
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#6
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Registered User
Join Date: Dec 2008
Location: Ord, Nebraska
Posts: 288
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does it get louder or faster with acceleration?
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02-12-2011, 06:56 AM
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#7
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Registered User
Join Date: Apr 2007
Location: Ohio
Posts: 367
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brakes hanging?
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02-12-2011, 07:35 AM
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#8
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Registered User
Join Date: Feb 2011
Location: Lexington, KY
Posts: 6
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Wheel bearings were changed, I don't think it's my tail pipe...possible though, I will have to check that out. It may go away if 4wd, but I am not 100% positive at this point, it just started doing it in the past 10K miles maybe
(150K on it). It does get louder and faster depending on my acceleration. I am due to swap brakes, I will try that as well.
Thanks for your replies, more are welcome.
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02-12-2011, 07:43 AM
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#9
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Registered User
Join Date: Dec 2008
Location: Ord, Nebraska
Posts: 288
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If it gets louder and faster, you can rule out exhaust.
Brakes sound like a good culprit to me.
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02-14-2011, 10:51 PM
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#10
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Registered User
Join Date: Jan 2007
Location: Roanoke, VA
Posts: 1,247
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Put it in 4wd and just drive around the block, You'll know if it goes away as soon as you accel up hill from a stop. I have fulltime 4wd and it never does it when its engaged. If you only have part time it wont hurt just keep it under a mile or so.
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02-15-2011, 06:20 AM
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#11
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Registered User
Join Date: Jan 2011
Location: Plattsburgh, NY
Posts: 112
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Your Brakes are probably hanging
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02-16-2011, 06:28 AM
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#12
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Registered User
Join Date: Feb 2011
Location: Lexington, KY
Posts: 6
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If it were my brakes (front), it would be pulling one way or the other, unless you are referring to the drums...they could possibly not have any friction material left. You can feel the griding, at hard/fast accel, under the floor boards in all 4 seats. It does not "grind" at slow accel.
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02-16-2011, 08:45 PM
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#13
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Registered User
Join Date: Nov 2009
Location: SouthWest Georgia
Posts: 347
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I'm hearing the same kind of noise on my '94. The brakes are good, and I've seen no indication of dragging brakes. The only time I notice this is at or close to WOT acceleration. "Normal" or slightly heavy acceleration doesn't cause it. If I didn't know better, I'd say the tires are spinning, but it will do it if going to WOT from 20-30 MPH. I may be mistaken, but I'm pretty sure its not spinning tires under those conditions.
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02-16-2011, 08:50 PM
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#14
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Registered User
Join Date: Aug 2009
Location: WV
Posts: 164
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This was happening to me. Check to see if it gets worse when you engage the e brake. Mine would rub on the driveshaft. Hence the faster and higher pitch when going faster. ;D
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02-16-2011, 09:04 PM
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#15
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previously XJ-Tim
Join Date: Sep 2010
Location: Huntington Beach, CA
Posts: 2,395
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check the tranny mount, check the flywheel cover. if it isnt these two or anything that you mentioned it could be something serious like an almost dead tranny/TC
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Grinding sound at accel
