Go Back   MustangForums.com > Ford Mustang Tech > V6 (1994-2004) Mustangs
Sign in using an external account
Register Forgot Password?

V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters
Sponsored by Optima Batteries

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!

Drivetrain vibration on deceleration

Thread Tools Search this Thread
Old 12-31-2010, 05:33 AM   #1
Join Date: Dec 2010
Vehicle: 1999 mustang conv 3.8L
Location: Washington
Posts: 1
Default Drivetrain vibration on deceleration

When I let up on the accelerator It seems like the driveline is vibrating as if it is out of balance. 99 3.8L w/automatic transmission.
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
pc_mechanic is offline   Reply With Quote
Old 12-31-2010, 11:58 AM   #2
Reverse Gear Member
RyansQuick6's Avatar
Join Date: Dec 2006
Vehicle: 02 V6 with some stuff
Location: Baton Rouge, LA
Posts: 8,120
Lamebook Twitter is ghey Linkedin is ghey XBox is the lame Don't come lookin for me
Send a message via ICQ to RyansQuick6 Send a message via AIM to RyansQuick6 Send a message via Yahoo to RyansQuick6

Sounds like it may be ujoints
RyansQuick6 is offline   Reply With Quote
Old 01-01-2011, 05:22 PM   #3
6th Gear Member
NeoTokyo's Avatar
Join Date: Dec 2003
Vehicle: 1995 Ford Mustang
Location: Sacramento, CA
Posts: 6,515
Send a message via AIM to NeoTokyo Send a message via Yahoo to NeoTokyo

My U joints are starting to go bad and thud when I let off or when I am at a stop and let off the brake.

So +1 to Ryan.

I am just waiting to swap driveshafts to an aluminum one, I will replace them then.


01' Mustang - Sold -
95' Mustang - Penny -
96' Mustang - NoName -
01' Passat GLX V6 4Motion
NeoTokyo is offline   Reply With Quote
Old 01-02-2011, 10:22 AM   #4
6th Gear Member
mustangman02232's Avatar
Join Date: Dec 2004
Vehicle: 03 cobra vert
Location: Ludlow, Mass
Posts: 15,800
Send a message via AIM to mustangman02232 Send a message via Yahoo to mustangman02232

crawl under the car and see if you can wiggle the drive shaft, if there is play its u joints, there cheap and easy to do if you have the right tools, or it could be something as stupid as a weight falling off the drive shaft

03 mustang cobra vert
CAI, catted H, flows diablow tuner, DRT rotors, hawk pads, SS lines

Steggy stage 6, 60lbers, KB BAP, 4lb lower, 2.81 upper, afco H/E, mgw sts, mm flsfc, billitflow irs brace, accufab tb/plenum

2009 ford F350 CCSB Lariat 5.4 (DD)
borla, CAI, SCT, leveled, tinted, fisher mm2

99 Mustang GT vert 35th (SOLD)
02 Mustang 3.8 vert(SOLD)
mustangman02232 is offline   Reply With Quote
Old 01-02-2011, 10:22 AM
Ford Mustang

Paid Advertisement


2011, brakes, decel, decelerating, deceleration, decelleration, driveline, drivetrain, ford, mustang, v6, vehicle, vibrate, vibrates, vibration

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


Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 09:16 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