How do you know if your rear end is going bad? - Third Generation F-Body Message Boards


Go Back   Third Generation F-Body Message Boards > Tech Boards > Transmissions and Drivetrain
Search

Transmissions and Drivetrain Need help with your trans? Problems with your axle?

How do you know if your rear end is going bad?

Reply
 
Thread Tools Search this Thread
Old 05-25-2001, 12:43 PM   #1
Senior Member
 
Join Date: Nov 2000
Location: Beaver,PA,USA
Posts: 661

Classifieds Rating: (0)
How do you know if your rear end is going bad?

I have an 88 IROC with the L98. I have the 2.77 rear end gear (RPO GH3) with posi-traction (RPO G80).

When going around corners under moderate acceleration, there is a subtle oscillation (about 0.5 second frequency) that feels like the power is being transmitted back-n-forth between the two rear wheels. This is a relatively new behavior.

Is my posi unit going bad? This is the first car that I have had with a posi unit so I don't have any experience spotting trouble or working with posi units.

Thanks.
KeithO is offline vBGarage Page   Reply With Quote
Old 05-25-2001, 12:55 PM   #2
Supreme Member
 
Join Date: Nov 1999
Location: NE
Posts: 2,860
Car: 82 camaro SC
Engine: 350
Transmission: 700r4

Classifieds Rating: (0)

Before you assume it's bad, change the fluid and install the posi additive.


------------------
82 camaro--original steering wheel, brake/gas pedals, seats--everything else modified
82camaro
82camaro is offline vBGarage Page   Reply With Quote
Old 05-25-2001, 01:53 PM   #3
Senior Member
 
Join Date: Nov 2000
Location: Beaver,PA,USA
Posts: 661

Classifieds Rating: (0)
Well, I had a trusted mechanic do that about 2,000 miles ago. He said everything looked good. Even so, I had him change the reatr end gear fluids for me. Since that time, I've autocrossed the car in 5 events and I am wondering if I haven't pushed it beyond it's capability...
KeithO is offline vBGarage Page   Reply With Quote
Old 05-26-2001, 09:17 AM   #4
Senior Member
 
Join Date: Nov 2000
Location: Beaver,PA,USA
Posts: 661

Classifieds Rating: (0)
Anyone else have any ideas?
KeithO is offline vBGarage Page   Reply With Quote
Old 05-26-2001, 11:48 AM   #5
Senior Member
 
Join Date: Jul 1999
Posts: 849

Classifieds Rating: (0)
Try a burnout. Look at the asphalt tatoo you leave. It should be equal from both tires. If not, that is a good indication the posi is bad.
Tom Keliher is offline vBGarage Page   Reply With Quote
Old 05-26-2001, 01:53 PM   #6
Senior Member
 
Join Date: Nov 2000
Location: Beaver,PA,USA
Posts: 661

Classifieds Rating: (0)
I do get two black marks on burnouts. However, I still feel this oscillation. Is this normal and I'm just being oversensitive to it?
KeithO is offline vBGarage Page   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
[MI] 10 Bolt Rear End Package Deal hectre13 Engine/Drivetrain/Suspension Parts for Sale 1 12-27-2015 09:30 PM
[MI] Never Used Posi and Gears for sale hectre13 Engine/Drivetrain/Suspension Parts for Sale 7 08-26-2015 09:17 AM
What are my rear end gears? Jlanz55 Transmissions and Drivetrain 3 08-17-2015 08:15 AM
[CA] Complete Parts Car- For T56 & LT1 Transplant to a Third Gen!!!! THIS WEEKEND ONLY 1992 Trans Am Engine/Drivetrain/Suspension Parts for Sale 1 08-08-2015 09:16 PM
[OK] 1982 TRANS AM ROLLING CHASSSIS WITH CROSSFIRE AND TRANS 3rdgenparts Firebirds for Sale 0 08-06-2015 10:03 AM


Go Back   Third Generation F-Body Message Boards > Tech Boards > Transmissions and Drivetrain

Tags
1986, bad, camaros, car, end, feel, gears, kno, oscilation, posi, power, rear, rearend, signs, traction

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 07:05 AM.


All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.