Help Needed Turbo and Overheating problem - SaabCentral Forums
Home Saab Pictures Saab Classifieds Saab Dealer Listings Saab Forum Saab Forum

Go Back   SaabCentral Forums > Saab 9000 > 9000 Workshop

9000 Workshop 9000 (1985-1998) Technical Forum is the premier Saab All Forum on the internet. Registered Users do not see the above ads.
Thread Tools Display Modes
Old 1st June 2003
t_marshfield t_marshfield is offline
New Member
Join Date: May 2003                                                
Location: Stroud, Glos. UK
Posts: 5
Default Help Needed Turbo and Overheating problem


I have 2 problems which are outlined below and could be related. I have the following car:

Model year 1991
The model is a 9000 S 2.3 Turbo.
Body style 5-door Combi-Coupe
Engine Turbo, B234 (2.3l full-pressure turbo - 200hp)
Transmission 5-speed manual
Built at Trollhattan line A

The 1st problem is Overheating.

If I drive the car quickly the car overheats if I drive sensibly then the temp is fine. I have replaced the thermostat and flushed the system.

The 2nd problem is that the turbo doesnt seem to be working.

When I put my foot down, the boost gauge moves slightly into the yellow then drops back down again. There doesnt seem to be any major increase in acceleration. When I stop the turbo is V.V. hot.

Any thoughts would be gratefully received.


Reply With Quote Quick reply to this message
Sponsored Links
Old 3rd June 2003
D. Wolfe D. Wolfe is offline
Saab Crazy
Join Date: Apr 2003                                                
Posts: 735
Default turbo overheating

You didn't mention how you are defining "overheating" Is your temp gage in the red zone or just higher than half-way up? If the car is actually overheating to where you have failure or backflush of antifreeze, you need to check your cooling fans since you have already changed out the thermostat already. If the fans are operating properly, I would double check your thermostat to ensure you installed the proper one(gaged by temp range).

Regarding the boost on your turbo, first thing is to check that all moving mechanisms are opening properly. There is a vent that opens and closes as needed(accelerating). If it is dragging open, you will loose the boost of air to the combustion chamber. Clean and lube the turbo. If this does not improve your boost, I suggest you have a mechanic check all the electric to the turbo for faults.

Hope this helps,

d. wolfe
Reply With Quote Quick reply to this message
Old 4th June 2003
Marrk's Avatar
Marrk Marrk is offline
Saab Lunatic
Join Date: Sep 2002                                                
Location: Bothel, Cumbria
Posts: 2,977

Don't worry about the turbo being hot, they are designed to run at high temps, mine glows cherry red most of the time on long runs...looks great in the dark!!!
It appears you are only running base boost, check all your vacuum lines for cracks or leaks. I think you can disconnect the electrical connection on the boost control valve...located on the right hand side of the radiator and take it for a run and see if the boost goes way up. If it does the control valve could be faulty, although when mine failed I had maximum boost, not base boost.
Do a search for base boost problems, the info there will help.
Good luck..
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 06:42 PM.

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

top of page | sitemap | email us

copyright © 2003 - 2011, All rights reserved - 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.