Rear end noise????
Thread Starter
Safety Car
Joined: Jan 2004
Posts: 4,776
Likes: 142
From: North of Atlanta GA
St. Jude Donor '05
Rear end noise????
I have a 82' and I hear sort of a clunk sound coming from the rear, it's very noticeable when coasting around 35-45 mph, and much less noticeable at higher speeds, the faster I go the faster it goes but at 60 or 70 I can't hear it. Took car to local vette shop who checked out rear end and says nothing serious is wrong but did not seem to pinpoint the noise. Car drives just fine. Any ideas?
[Modified by pcfred, 4:04 AM 1/25/2004]
[Modified by pcfred, 4:04 AM 1/25/2004]
Race Director
Joined: Jul 2002
Posts: 13,858
Likes: 0
From: A 12/8 man in a 4/4 world
Re: Rear end noise???? (pcfred)
could be several things.
the simplist is to change the fluid in the differential making sure the 4oz of the positraction additive is added.
could be any of the universal joints. could be the rear wheel bearings. Im sure others will chime in on their opinions.
the simplist is to change the fluid in the differential making sure the 4oz of the positraction additive is added.
could be any of the universal joints. could be the rear wheel bearings. Im sure others will chime in on their opinions.
Drifting
Joined: Nov 2003
Posts: 1,634
Likes: 4
From: Northern NJ
St. Jude Donor '04 & '05
Re: Rear end noise???? (79Fever)
:iagree:
Assuming the shop found nothing else amiss in your rear suspension, then try changing out the rear end fluid and add at least one, or better yet two bottles of GM posi additive. Then goto a parking lot and do a bunch of figure 8's to work the new fluid into the posi unit.
If this doesn't help then your issue is probably somewhere else. However unless you know the last time the rear end fluid has been changed, then this is a good idea regardless if it fixes your issue or not. Your diff will thank you either way! :yesnod:
Good Luck!
:seeya
Assuming the shop found nothing else amiss in your rear suspension, then try changing out the rear end fluid and add at least one, or better yet two bottles of GM posi additive. Then goto a parking lot and do a bunch of figure 8's to work the new fluid into the posi unit.
If this doesn't help then your issue is probably somewhere else. However unless you know the last time the rear end fluid has been changed, then this is a good idea regardless if it fixes your issue or not. Your diff will thank you either way! :yesnod:
Good Luck!
:seeya
Le Mans Master
Joined: Apr 2001
Posts: 5,000
Likes: 1
From: Minneapolis, Mn USA
Re: Rear end noise???? (pcfred)
Do a fluid change first and check U-joints again closely for red dust.
Also check your E-brake hardware ASAP. I had mine come loose and self destruct, locking up my drivers rear tire. Started to hear the noise doing around 50. I pulled over after about 1 mile to investigate and that is where my rear tire locked up.
Cost me a flatbed ride home. Needless to say my e-brake hardware is permanently removed. Once I removed the rear rotor, the e-brake hardware just fell to the ground. Passenger side was still perfect. Cali car so hardware was basically rust free. An old spring let loose I suppose.
Brent....
Also check your E-brake hardware ASAP. I had mine come loose and self destruct, locking up my drivers rear tire. Started to hear the noise doing around 50. I pulled over after about 1 mile to investigate and that is where my rear tire locked up.
Cost me a flatbed ride home. Needless to say my e-brake hardware is permanently removed. Once I removed the rear rotor, the e-brake hardware just fell to the ground. Passenger side was still perfect. Cali car so hardware was basically rust free. An old spring let loose I suppose.
Brent....
