Occasional stalling after starting - SaabCentral Forums
*
Home Saab Pictures Saab Classifieds Saab Dealer Listings Saab Forum Saab Forum


Go Back   SaabCentral Forums > Saab 9-5 Mk.I, 1998-2009 > 9-5 Workshop

9-5 Workshop 9-5 Workshop (1997 to 2010) 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 17th September 2010
jvanmol jvanmol is offline
Junior Member
 
Join Date: Jul 2010                                                
Location: Canada
My Saabs: 9-5 2003
Posts: 7
Default Occasional stalling after starting

Hello,

My 2003 Saab 9-5 2.3t 140km occasionally stalls after starting, it also sometimes has a rough idle when the AC kicks on and if I start it the next day after a long trip. After it warms up it does not act up at all. Any ideas on what may be causing this or how to fix it? No check engine lights or anything out of the ordinary going on...

Thanks again for your help

Jacque
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 17th September 2010
metrognome's Avatar
metrognome metrognome is offline
Saab Crazy
 
Join Date: Jul 2005                                                
Location: Jacksonville, FL USA
My Saabs: 2007 9-3 2.0T - 36,000 miles
Posts: 668
Default

This could be several things. If the fuel filter has not been changed, I'd do that. I'd also clean the throttle body. Both of these are cheap and easy to do. If those do not work, you may need a new fuel pump.
__________________
SAAB Forever!
Northeast Florida Saab Club: http://www.neflsaab.com
Reply With Quote Quick reply to this message
  #3  
Old 18th September 2010
Saab_Love's Avatar
Saab_Love Saab_Love is offline
SaabNut!
 
Join Date: Aug 2010                                                
Location: MA/RI
My Saabs: 2002 9-5 aero and 1995 9000 CSE (aero)
Posts: 269
Default

Quote:
Originally Posted by metrognome View Post
This could be several things. If the fuel filter has not been changed, I'd do that. I'd also clean the throttle body. Both of these are cheap and easy to do. If those do not work, you may need a new fuel pump.
Using the same brand of gas on a consistent basis will help this problem. There are certain brands of gas that change the ethanol amount time to time and it causes big problems when first starting the car,

Replace your air filter.
Check your MAF*
Check your plugs
Check all your vacuum lines for leaks

I had this same problem and it was the MAF.. if there is a problem with the MAF the car has no idea what to do with the fuel/air ratio until it switches over to the predetermined quantity programed in the ECU..which is why once it's warmed up it ran fine.. in my case anyway. Changing my MAF solved the issue for me
Reply With Quote Quick reply to this message
  #4  
Old 18th September 2010
brewtide brewtide is offline
Saab Lunatic
 
Join Date: Jan 2004                                                
Location: Maine.
My Saabs: 2000 Aero wagon (5spd), 1999 9-5 (5spd)
Posts: 1,917
Default

Also note, if it is the MAF, it should stall out / idle like crap, etc until it throws a CEL (or at least a stored code...) and then, instantly, it'll idle worlds better on the ECU's baseline values, as priorly stated.

I had this issue all Spring; And then it went away. I do think I am looking at a slight headgasket leak, so perhaps it had something to do with it.

I also have the two fuel check valves (feed / return) sitting in a box, awaiting a 'free moment', as these could be the culprit!

Cheers.
Reply With Quote Quick reply to this message
  #5  
Old 18th September 2010
stsleeper94 stsleeper94 is offline
Active Member
 
Join Date: Aug 2008                                                
Location: Texas
Posts: 85
Default

Had this issue when my TB was getting older. Would turn the A/C on and ... Stall, start up, a/c on stall... So I cleaned it, no more issues. I pulled the TB, and cleaned it proper, but some TB cleaner could do the trick. I dumbly replaced my MAF as it was under 100bucks and thought it was the issue. Didn't do anything : (
Reply With Quote Quick reply to this message
  #6  
Old 18th September 2010
jvanmol jvanmol is offline
Junior Member
 
Join Date: Jul 2010                                                
Location: Canada
My Saabs: 9-5 2003
Posts: 7
Default Tb

What is a TB?
Reply With Quote Quick reply to this message
  #7  
Old 19th September 2010
Saaber95er's Avatar
Saaber95er Saaber95er is offline
Saab Lunatic
 
Join Date: Mar 2010                                                
Location: LI NY
My Saabs: 1999 9-5 SE 5spd
Posts: 3,949
Garage
Default

Quote:
Originally Posted by jvanmol View Post
What is a TB?
"Throttle Body"
Reply With Quote Quick reply to this message
  #8  
Old 21st September 2010
jvanmol jvanmol is offline
Junior Member
 
Join Date: Jul 2010                                                
Location: Canada
My Saabs: 9-5 2003
Posts: 7
Default Ha!

hey,

So I changed the Airfilter and tried to clean the MAF. I think that the Air filter was the original, man was it junked up with crap. Car is running substantially more smoothly. I am going to buy some liquid TB cleaner and run it through and see if there is more improvement.
Thanks for the recommendations.
Reply With Quote Quick reply to this message
  #9  
Old 21st September 2010
planosaab's Avatar
planosaab planosaab is offline
Saab Lunatic
 
Join Date: May 2008                                                
Location: Texas DFW
My Saabs: 99 9-5 TD04 270hk::2000 Viggen 5-Door
Posts: 1,090
Default

Not always the TB I swapped mine from my Viggen which has never had trouble and my 9-5 still stumbled and died with long cranks, then swapped di's, and plugs, still same thing. Swapped MAF and walla it hasn't done it in 2 weeks now. Just saying it's not always the TB even if it is very common problem.

And I swapped everything back as it didn't help so the old 9-5 tb is back on the 9-5 and still no hiccups or stalls upon crank.
Reply With Quote Quick reply to this message
  #10  
Old 21st September 2010
jvanmol jvanmol is offline
Junior Member
 
Join Date: Jul 2010                                                
Location: Canada
My Saabs: 9-5 2003
Posts: 7
Default Tb

Cleaned out my TB, no major improvement. Still, much better since the MAF cleaning and change of the air filter.
Reply With Quote Quick reply to this message
  #11  
Old 21st September 2010
stsleeper94 stsleeper94 is offline
Active Member
 
Join Date: Aug 2008                                                
Location: Texas
Posts: 85
Default

I pulled my TB as it really was dumb easy and I feel like I cleaned so much more then what I could do sitting there hanging over the engine bay. All you need to do is re-grease the ring when you seat it back on and you will get a much better clean. Just my 2 cents.
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:
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 08:48 AM.



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.