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
Or you have a vacuum leak, or
Like This Post: - Subscribe to Daily Digest for this Bulletin Board
Posted by Ari [Email] (#2847) [Profile/Gallery] (more from Ari) on Tue, 8 Apr 2008 05:36:19 Share Post by Email
In Reply to: Chekc engine!, Samuel, Tue, 8 Apr 2008 00:01:36
Alert me when someone posts in this thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup

As Swedespeed7 notes 6 flashes is code P0130, which is the O2 sensor out of range. Given the work done in replacing an engine, checking the wiring to the sensor makes a lot of sense. However, it doesn't necessarily mean a new one is in order.

The O2 sensor may be working just fine. The ECU faults the sensor if the sensor signal is out of range. The O2 sensor has a very narrow range, so even a little rich or lean will keep the sensor pegged to one side. So, if an air line is leaking or just wasn't connected, the engine would run lean. The ECU would try and compensate based on the O2 sensor saying the car is running lean, but the authority of the O2 sensor is only about 25% of fuel flow. The signal from the O2 sensor can only do so much. So if that doesn't richen the mixture up enough to bring the O2 sensor signal back into range, the ECU will signal an O2 fault, even though the problem is a vacuum leak. The same would be if the engine were running rich due to a bad FPR.

Step 0- inspect the O2 sensor wiring to make sure it is correct.
Step 1 - pull the spark plugs. Is the engine running rich or lean? The spark plugs tell the truth. Next, stick a voltmeter on the O2 signal (not the heater!) and run the engine. A rich signal is near 0.9 volts; a lean is near 0.1 or 0.2 volts.

Now, if the O2 sensor appears to DISAGREE with the engine condition - the O2 sensor says lean but the engine is running rich - then I'd suspect the O2 sensor. But if the sensor and engine agree - a low O2 sensor voltage (lean) and whitish plugs - then the O2 sensor is probably fine, and you need to look elsewhere.

For lean running, check for vacuum leaks and fuel flow issues. For rich, check the FPR.

posted by 192.249....
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!