The banner above is an advertisment - if it asks you to download software, please ignore.
Site News - 7/1: Members: Log In to See Fewer Ads! | 5/28: SAAB Evolutions/TSN T-Shirts $14
[General | Members | C900 | 9000 | NG900 & OG93 | 93 | 95 | NG95 | 99 | Sonett | Vintage Models | Clubs | Other Cars | FAQs | Gifts | Member Photo Galleries | Member Directory | Classifieds | Manuals | *Buddy Registry | *Mileage Registry | Polls | What's New | Raffle | Photo of the Month | Sponsors]

C900 Bulletin Board
1979-1993 & 94 Conv [Subscribe to Daily Digest]
(Search Author's Posts: e.g. Keyword:username)*Members Only

[Main C900 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
falling idle and hesitation help
Like This Post: - Subscribe to Daily Digest for this Bulletin Board
Posted by chrisb [Email] (more from chrisb) on Wed, 13 Feb 2002 16:09:15 Share Post by Email
Alert me when someone posts in this thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup

I need some help on what seems to be quite frequent problem for Saabs. Less than 4 months ago my '91 900 (automatic, no turbo, 130k) started to have a sporadic problem where at traffic lights the idle would briefly fall then pick back up, and sometimes repeat. Also on accelertation the car would hesitate and stumble quite frequently. After a few days it got worse and finally stalled out during one of the idle drops while at a traffic light. My mechanic wasnt able to pinpoint the problem and ended up replacing the spark plugs, which seemed to solve the problem, until 2 weeks ago, when the same symptoms resurfaced. The problem seems to occur after I drive about a mile, at 45 mph, after leaving my apartment complex and then have to wait at a long light. While at the light the idle level will drop do varying degrees, sometimes just a little, and sometimes to the point where I wonder how it didnt stall. The rest of the they way into work the idle with bounce around while at lights and upon acceleration there is a signicant hesitation, sometimes even when doing 30 mph going down the road. When I drive home at lunch, or after work, there maybe a slight hesitation once, or not even at all. The problem seems to be worse when it is raining or cooler (I live in Fla). Yesterday I brought it back into the mechanic, who once again said he couldnt pinpoint the problem, but he replaced the distributor cap and rotor and air filter, as he said those were needing a replacement. (the last major service I had was 20k and 2 years ago). Driving home from the mechanic the car ran fine. This morning the problem was worse than ever. I have researched this problem on various posting and have read varying ways to attack the problem with parts like the air mass meter, AIC, and oxygen sensor being labeled as culprits. I am not sure where to go next after reading the postings, could anyone describe the process or steps I should take to try to solve the problem the fastest way possible. I am an average do-it-yourselfer, but have little experience under the hood of a Saab.

Thanks in advance for any advice

posted by 128.227.1...
Posts in this Thread:
Alert me when someone posts in this thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup

No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.

Name: Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
E-Mail: (Optional)
Re-Enter E-Mail: (Confidential & Secure - Not revealed to other users!)
Note: Please check your spam folder for BB responses.

Subject:

Posting rules are simple - No for sale/wanted ads may be posted here - use the site classifieds.
You may not cross-post your message to multiple BBs.
Not permitted: political/religious topics and being disrespectful (personal attacks, insults, etc...).
 Site Members do not see any red text, inline ad links, bottom of page anchor ads, box ads, or anti-spam check.

Message: (please no for sale/wanted classifieds - post those in the Saabnet.com Classifieds)
Links are now automatically made active, no need for any special code (or use the Option Link field below) - don't put links in () or end with a '.'
To add inline images to your post, use [img]http://www.domain.com/img.jpg[endimg] (or use the Optional Image Link field below).

Links are now automatically made active, no need for any special code (or use the Option Link field below) - don't put links in () or end with a '.'
To add inline images to your post above, use [img]http://www.domain.com/img.jpg[endimg] (or use the Optional Image Link field below).
Optional Link: (e.g. http://www.saabnet.com/)
Link Title: (Optional)
Optional Photo/Image Link: (e.g. http://www.saabnet.com/img.jpg)
Photo/Image to Upload: (Please be patient while file uploads)



StateOfNine.com
SaabClub.com
Jak Stoll Performance
M Car Covers
Ad Available

The content on this site may not be republished without permission. Copyright © 1988-2024 - The Saab Network - saabnet.com.
For usage guidelines, see the Mission & Privacy Notice.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]

Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right. Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY. Classifieds are to be listed in The Saab Network Classifieds pages. This is a problem solving forum for over 250,000 Saab owners, so expect to see problems discussed here even though our cars are generally very reliable. This is not an anything goes type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the Saabnet.com Mission and Purpose Page. Please remember that you are not anonymous. Site Contact | Site Donations | Other Sites by SP - Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot


Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all the Site Membership Benefits!