"Thud" when reversing - SaabCentral Forums
Home Saab Pictures Saab Classifieds Saab Dealer Listings Saab Forum Saab Forum

Go Back   SaabCentral Forums > Saab NG900, 1994-1998 and OG9-3, 1999-2002 & '03 Convertible (NG=new gen/OG=old gen) > NG900 & OG9-3 Workshop

NG900 & OG9-3 Workshop NG900 (1994 to 1998) & OG9-3 (1999-2002) & '03 Convertible Technical Forum

SaabCentral.com is the premier Saab All Forum on the internet. Registered Users do not see the above ads.
Thread Tools Display Modes
Old 24th December 2008
jbenedetto jbenedetto is offline
Active Member
Join Date: Apr 2007                                                
Location: Northern VA
My Saabs: '00 9-3 Viggen
Posts: 46
Default "Thud" when reversing

Hi all, it's been a long time since I've posted, which means my SAAB hasn't had any problems for a while. Lately it's been cold, and when it's below 30 F, when I reverse, I feel a strong "THUD" after reversing about 6 feet (1,9 m) or so. It feels just like I've hit something. I have even gotten out of the car and checked the rear of my car to be sure I am not running over the garbage can or something..

It's been happening somewhat regularly, but only when it's cold, around 25 deg. F.. Any ideas?


Reply With Quote Quick reply to this message
Sponsored Links
Old 24th December 2008
busaboy busaboy is offline
Saab Lunatic
Join Date: Sep 2004                                                
Location: Northern Virginia
My Saabs: 2000 Viggen 5-door
Posts: 2,908

My first thought was that the handbrake might be sticking.
Reply With Quote Quick reply to this message
Old 24th December 2008
earthworm's Avatar
earthworm earthworm is offline
Saab Sage!
Join Date: Jun 2003                                                
Location: Goldsboro, PA
My Saabs: '96 900S, Automatic with 148K miles, blu
Posts: 21,583

If its a broken or badly cracked engine mount, you may hear a clank, a metal to metal sound..
The earthworm
'96 900S, Automatic
Those who think in the past will have no future.
173K miles in the good ole USA
Reply With Quote Quick reply to this message
Old 24th December 2008
jordan jordan is offline
Join Date: Oct 2005                                                
Location: Corning, NY
My Saabs: 2000 saab 9-3 4 door 2.0l turbo
Posts: 369

I had the same problem that happened a few times, the first time I really thought I hit something. Upon inspection I saw nothing anywhere out of the ordinary, and all was good when driving forward. When I went and did a full brake job on the car I found that the passengerside emergency brake was all mangled. All of the springs were missing, I only found one retaining clip in a pile of friction material that was broken up. There were some very deep gouges in the friction material from the shoe that was intact, and some gouges in the ID of the rotor that were not from normal wear. I determined the thud and kind of jerk the car made to pieces of the emergency brake assemble getting wadded up in the rear rotor while in reverse. I replaced everything and it never happened again.
Reply With Quote Quick reply to this message
Old 25th December 2008
GarrettCharger's Avatar
GarrettCharger GarrettCharger is offline
Join Date: Jan 2008                                                
Location: Charlotte, NC
My Saabs: 06' 9-3 Aero 6-spd
Posts: 446
Default Food for thought

I have had similar thud noises when reversing. One was caused by a loose 6-pt subframe brace bolt, but if you don't have a subframe brace then you can be sure that is not your problem. The other one was a bit louder and was obvioulsy coming from the front end, it was being caused by worn-out strut bearings. In both of my cases the noises only occured while backing up with the wheel turned (backing out of the driveway / parking spaces).
Reply With Quote Quick reply to this message
Sponsored Links


Quick Reply

Register Now

In order to be able to post messages on the SaabCentral Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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

Forum Jump

All times are GMT -4. The time now is 03:05 AM.

Powered by vBulletin® Copyright ©2000 - 2017, vBulletin Solutions, Inc.

top of page | sitemap | email us

copyright © 2003 - 2011 saabcentral.com, All rights reserved http://www.whiter.co.uk - valid xhtml - valid css
SaabCentral is an independently run website and is not affiliated in any way to Saab Automobile AB.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.