Erratic idle fixed! - For TCS 9000s only - 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

SaabCentral.com is the premier Saab Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
  #1  
Old 14th December 2002
Alanb Alanb is offline
Saab Crazy
 
Join Date: Aug 2001                                                
Location: West Bath via Sussex, Stirling and Essex
Posts: 622
Default Erratic idle fixed! - For TCS 9000s only

Ever since I've owned my car I've put up with an intensely irritating idle, which misses every 10-15 seconds. I had presumed that it was a symptom of something serious rather than something silly. For a change, I was proved wrong.

The most common cause of an uneven idle with non TCS cars is a dirty AIC valve and/or dirty throttle body. However, on TCS equipped cars there is no AIC and the throttle plate can't easily be moved for cleaning purposes.

Finally, today I took a good look at my car to figure out what I could do. I took off the rubber inlet pipe, which is attached to the throttle body. Then I removed the pipe which is attached to the top of throttle mechanism from it's point of origin (which is near the false bulkhead). I sucked hard on this pipe and watched as the throttle plate turned 90 degrees. I bunged the end of the pipe, to maintain a vacuum and set about cleaning the throttle plate and throttle body using carb cleaner and a tooth brush.

Once I had reconnected the pipes, I started the car and was amazed to find that the car settled down to a stumble-free idle.

I had little faith that it would work because I presumed that a dealer-serviced car like mine would have had its throttle plate cleaned regularly. In fact, it looked to me as if the plate had never been cleaned.

Alanb
Reply With Quote Quick reply to this message
  #2  
Old 14th December 2002
BillJ BillJ is offline
Saab Crazy
 
Join Date: Aug 2002                                                
Location: Devon, UK
My Saabs: Error 404
Posts: 772
Default Re: Erratic idle fixed! - For TCS 9000s only

Quote:
Originally Posted by Alanb
I presumed that a dealer-serviced car like mine would have had its throttle plate cleaned regularly.
I'd have made the same assumption. Either the throttle body gets dirty very quickly or Saab technicians get bored very quickly...

Hopefully you have saved yourself from the dreaded "limp-home" mode, which I think would only have been a matter of time if the throttle body was dirty enough to affect idle.
__________________
www.saab9000.com - everything you ever wanted to know about the Saab 9000
www.saabits.com - stuff to help keep Saabs on the road
Reply With Quote Quick reply to this message
  #3  
Old 15th December 2002
Alanb Alanb is offline
Saab Crazy
 
Join Date: Aug 2001                                                
Location: West Bath via Sussex, Stirling and Essex
Posts: 622
Default

Thankfully, no limp home mode before I cleaned the throttle body.

I suppose that I should have expected the throtle body to have been untouched given that when I removed the spark plugs on my 'dealer serviced' car, their gaps were over 1.4mm (hence the dead DI cassette).

Alanb
Reply With Quote Quick reply to this message
  #4  
Old 15th December 2002
BillJ BillJ is offline
Saab Crazy
 
Join Date: Aug 2002                                                
Location: Devon, UK
My Saabs: Error 404
Posts: 772
Default

Quote:
Originally Posted by Alanb
when I removed the spark plugs on my 'dealer serviced' car, their gaps were over 1.4mm (hence the dead DI cassette).
The plugs in my dealer-serviced CSE were like that (well, just under 1.4mm) when I got it. Makes you wonder, doesn't it?
__________________
www.saab9000.com - everything you ever wanted to know about the Saab 9000
www.saabits.com - stuff to help keep Saabs on the road
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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 07:14 PM.



Powered by vBulletin® Copyright ©2000 - 2014, 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.


Garage Plus vBulletin Plugins by Drive Thru Online, Inc.