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Unread 02-14-2011, 04:18 PM   #1
ChrisTJCO
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1997 TJ Wrangler 
 
Join Date: Mar 2010
Location: Denver
Posts: 554
Rumbling/grinding sound at highway speeds. Wheel bearings?

My 2001 XJ Sport makes a fairly loud rumbling sound going at highway speeds (60+). It's sounds like a dull grinding or rumbling that is loud enough to make talking with a passenger a little bit difficult. Could this be the front wheel bearings?

The XJ is a 2001 with 135K miles and still has the original bearings/hub assemblies (as far as I know).

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Unread 02-14-2011, 04:43 PM   #2
thorszj
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1995 ZJ 
 
Join Date: Dec 2010
Location: kansas city, MO
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I have a 95 grand cherokee. I recently put a 4" lift on it. I was experiencing the same thing that you are talking about. I experience a rough grinding sound coming from the jeep's drive train. The ride is rough, as if i were running big mud terrain tires, and i have not yet changed the tires. I do not experience much vibration while execrating, but as soon as I come off the gas the grinding sound comes back. if i am going down hill and not accelerating the grinding is very evident. At highway speeds around 65mph the sound is a lot more louder. and it intermittently gets louder to the point that the grinding/vibration makes the interior vibrate and rattle. This vehicle has all-time 4wheel drive, when I took the front factory drive shaft off noise went away. I had a custom drive shaft fabricated by the guys at Carolina Driveline, they did a great job. As soon as I put the shaft on the Grinding vibration came back..... any ideas?
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Unread 02-14-2011, 04:45 PM   #3
bds5
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2006 TJ Wrangler 
 
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Location: dallas, texas
Posts: 370
Yes it could be, my sons were bad and they made a very loud rumble Almost scary rumble..
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Unread 02-14-2011, 04:45 PM   #4
ChrisTJCO
Registered User
1997 TJ Wrangler 
 
Join Date: Mar 2010
Location: Denver
Posts: 554
Quote:
Originally Posted by thorszj View Post
I have a 95 grand cherokee. I recently put a 4" lift on it. I was experiencing the same thing that you are talking about. I experience a rough grinding sound coming from the jeep's drive train. The ride is rough, as if i were running big mud terrain tires, and i have not yet changed the tires. I do not experience much vibration while execrating, but as soon as I come off the gas the grinding sound comes back. if i am going down hill and not accelerating the grinding is very evident. At highway speeds around 65mph the sound is a lot more louder. and it intermittently gets louder to the point that the grinding/vibration makes the interior vibrate and rattle. This vehicle has all-time 4wheel drive, when I took the front factory drive shaft off noise went away. I had a custom drive shaft fabricated by the guys at Carolina Driveline, they did a great job. As soon as I put the shaft on the Grinding vibration came back..... any ideas?
That sounds like a completely different problem - and you're in the wrong forum. Might have better luck at the ZJ forum: http://www.jeepforum.com/forum/f2/
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