The banner above is an advertisment - if it asks you to download software, please ignore.
Site News - 4/9 Saab Owners' Convention Day Pass Raffle | 3/26 M Car Covers (by State of Nine)

The Saab Network Mailing List FAQ
Search:

Main Index
[ Prev by Date ] [ Next by Date ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: Check Engine
Posted by jfrancis (more from jfrancis) on Sun, 7 Apr 2002 19:03:57
In Reply to: , Kok Chen, Sat, 17 Dec 1988 12:00:00 

I can't be a lot of help to you, Azmi, but those problems don't sound like
air mass meter or O2 sensor to me!  The Bentley manual has an easy test for
the air mass meter.  It's not all-inclusive, by any means, but will at least
tell you if the hot wire is working or not.

Leave the Air Mass Meter plugged in electrically, but disconnect the rubber
bellows that go to the air filter, and position the AMM (air mass meter) so
you can look inside of it.  (it's best to do this in somewhat dim light)
Have a friend start the engine, run it for a few seconds, then shut it off.
After about four seconds, the hot wire in the AMM should glow brightly for
about one second, then shut off.  This is a burn-off cycle it does to keep
clean.  If the wire glows, it's a pretty good bet that your AMM is fine.

In my experience, a bad AMM will cause poor acceleration, especially from a
stop, and occasional hard starting, as the engine computer has to get all of
it's information from the oxygen sensor.  Once running at a constant speed,
though, it will run smoothly even with a bad AMM.  I don't have any personal
experience with a bad oxygen sensor, but I'm told it will affect gas mileage
and emissions far more than the actual running of the engine.

Good luck with it!

John Francis
1987 900S
180,000
Rolla, MO

Posts in this Thread:
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]

This is a moderated FAQ - 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. TSN has been a moderated forum since 1988. For usage guidelines, see the TSN Mission and Purpose Page. Please remember that you are not anonymous
Your address is: 3.136.154.103 - Using Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) - Logged.
Site Members do not see red text instructions, green links, and bottom of the page banners.
Click here to see all the Site Membership Benefits!