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
rough idle at cold start, could it be the AIC?
Like This Post: - Subscribe to Daily Digest for this Bulletin Board
Posted by Jason Klophaus [Email] (more from Jason Klophaus) on Sat, 7 Nov 2009 16:51:47 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 have a 1986 Saab 900S (non turbo) 16 valve LH 2.2. Live at ~ 5k ft (don't know if that matters). Love the car, it's my first saab. The only problem I run into is at a cold start I have to gingerly give it gas and work the clutch until it is warmed up or it will stall. Once warmed up idles at 850 on the nose no problem.

So far I have done the following:
-use 89 octane gas
-new spark plugs and wires (seem to be burning clean, checked the plugs)
-adjusted timing to 14 deg BTDC
-flushed coolant, checked temp sensor for resistance and seems ok
-fresh oil /trans fluid / air filter
-cleaned out AIC valve as mentioned in other posts
-cleaned out throttle intake body
-cleaned AMM with cleaner specifically for it

I thought this would be the Air Mass Meter. I reved the car to 2500 rpm turned it off and saw the AMM glow for a second as it should. I check resistance across 3 and 6 and adjusted it from ~300 to 380 ohms as instructed in the bentley manual. As far as I can tell the AMM seems to be working.

I checked the voltage at the 02 sensor. After warmed up and idling it is at ~0.5 V. When I pull the vacuum hose to the fuel injector reg it doesn't change voltage much. When I open the oil cap it doesn't change voltage much. Idle definitely changes, should I see a bigger voltage jump?

Next took a look at the Air Idle Control Valve. I'm not sure that it is working. I put a screw driver to it at idle and didn't hear buzzing. I unplugged the wiring and didn't hear a change. So I'm thinking this is the problem even though most posts seem to indicate the AIC is fine if everything is operating well once the car is warmed up. I would really appreciate any feedback. Thanks!

Jason




posted by 67.166.12...
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!