Go Back   MustangForums.com > Ford Mustang Tech > 4.6L (1996-2004 Modular) Mustang
Sign in using an external account
Register Forgot Password?
Search


4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.
Sponsored by Cruizin Concepts


Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 05-06-2013, 12:45 AM   #1
jerseyjeep2003
 
Join Date: Nov 2012
Vehicle: 2001 Ford Mustang
Location: New Jersey
Posts: 5
Question '01 GT Noisey rear suspension

I have an '01 GT that was modded before I got it 8 months ago. Mods to the suspension are Bilstein coilovers (lowered 1 1/2"), MMS caster plates, full length weld in frame connectors, MMS panhard bar, MMS LCA's, UCA's are still stock. Recently I had to replace my front wheel bearings and while I was doing that, I adjusted my front shocks so my ride height was the same front to back. Plus, I laid into the skinny pedal a couple of times. OK, background is set, on to the questions. I now have a loud klunk coming from the rear of the car when I am making a full right turn in or out of my driveway, the apron has a 1" curb with about a 2 degree incline. I have inspected my torque boxes and don't see any visible cracks or deformities. Yet the sound is so loud that something should be visible. I have pried on every part under the rear of the car, both with it hanging and under load, and cannot get any abnormal movement. I have even laid in the trunk while someone else replicated the sound and can pinpoint the sound to the area almost in the middle of the rear seat floor area. Could my torque boxes still be loose even though there is nothing obvious? Or could it be a bad bushing somewhere? Possibly posi clutch packs going south?
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
jerseyjeep2003 is offline   Reply With Quote
Old 05-06-2013, 08:33 AM   #2
Seabee1993
2nd Gear Member
 
Join Date: Aug 2012
Vehicle: 2000 Ford, Mustang GT
Location: MS
Posts: 464
Default

Could be the that bump stop up in the bottom of the car above your diff. They may have not swapped it out, the OEM one is HUGE!
Seabee1993 is offline   Reply With Quote
Old 05-07-2013, 12:37 PM   #3
jerseyjeep2003
 
Join Date: Nov 2012
Vehicle: 2001 Ford Mustang
Location: New Jersey
Posts: 5
Default

Quote:
Originally Posted by Seabee1993 View Post
Could be the that bump stop up in the bottom of the car above your diff. They may have not swapped it out, the OEM one is HUGE!
I am the kind of guy that likes a visual confirmation, that is why this issue is making me nuts, no visable cracks or movement anywhere, but yet SOMETHING is moving. What about the counterweight? I did notice that one of the bushings on it is missing. It floats up and down with a little effort.

The bump stop looks like it is still the OEM one. It is pretty close to the top of the pinion on the diff. Maybe I will try removing it and the quad shocks.....just for a test. Then replace them if the noise is still there.
jerseyjeep2003 is offline   Reply With Quote
Old 05-08-2013, 07:34 AM   #4
Seabee1993
2nd Gear Member
 
Join Date: Aug 2012
Vehicle: 2000 Ford, Mustang GT
Location: MS
Posts: 464
Default

It sounds like one of those "I'd have to be there" things.
Seabee1993 is offline   Reply With Quote
Old 05-11-2013, 11:49 AM   #5
jerseyjeep2003
 
Join Date: Nov 2012
Vehicle: 2001 Ford Mustang
Location: New Jersey
Posts: 5
Default

OK, still chasing my "klunk". I removed the counterweight, and quad shocks. The noise is still there. I went to a local speed shop for input and to see if they carried the bushings for my MMS control arms. No luck on the bushings. But he said unless I was pushing large amounts of HP, the torque boxes would probably be ok. Also, now I didn't know this, that standard grease is detrimental to those poly bushings. So with grease fittings to lubricate the bushings and 8 years of maintainence from the previous owner, I am thinking that the bushings are the culprit. I ordered new ones from MMS (they use their own unique size, so OE ones won't fit) and will be doing the install next weekend. HOPEFULLY this fixes it, as it is driving me crazy.
jerseyjeep2003 is offline   Reply With Quote
Old 05-11-2013, 11:49 AM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

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

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 05:15 AM.

© Internet Brands, Inc.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup