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]

9000 Bulletin Board
1985-1998 [Subscribe to Daily Digest]
(Search Author's Posts: e.g. Keyword:username)*Members Only

[Main 9000 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
AMM/ECU and hesitation probs?
Like This Post: - Subscribe to Daily Digest for this Bulletin Board
Posted by Neil [Email] (more from Neil) on Sun, 18 Apr 2004 08:53:51 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 am dusting down my 2nd 9000, it is a UK 1990, 2.3 Turbo S, manual, TCS, LH2.4 with lambda and non adjustable AMM. The car had been parked for several years before I got it and am bringing it back to work!

I am experiencing a couple of niggling probs though and would appreciate any help.

The CEL is on; Fault codes read are:

12111 Learning fault in lambda(air fuel mixture adj) vacuum leak,oxygen sensor,air mass meter
12112 Learning fault in lambda(air fuel mixture adj) vacuum leak,oxygen sensor,air mass meter
12223 fuel air mixture too lean vacuum leak,oxygen sesor,air mass meter
12241 injector faulty

On accelarating, the car will reach around 3000rpm and seem to hesitate for a fraction of a second - like a flat spot - then pick up. It is minor, but CEL light and this sympton make me want to get it sorted.

I have done the following:
Checked for leaks - all vac lines are ok. Did discover a busted (hooter) air bypass valve though. the car drives more smoothly since replacing with the good one from my 2.0T.
Checked all wiring from AMM to ECU.
Checked AMM output - it around 2.3V to 3v+, however, I do not see any burn off! I have not burn off voltage indicated and have looked at the hot wire and cannot see it glow at all. Could this point to ECU or AMM?

AMM BOSCH part number ends in 012. I have a spare but it is for a 2.0T and ends in 017 and from reading the board, I don't think is interchangeable.

I have taken each of the injectors out and cleaned them thoroughly.

The DI cassette is only 10K miles old and the plugs are new. Tried another DI and car was the same.

I have not checked fuel pressure or replaced the fuel filter yet.

Any ideas on what to do next?

Thanks,
Neil

posted by 195.92.67...
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!