Re: Can fuel pump or CPS faults be intermittent? - Saabnet.com Bulletin Board
I had a similar experience with my '96 9000CS. Driving along when suddenly the engine just cutout and all I could do was coast to the side of the road. The car would not start again. I came back next day, the car started up fine and I drove back home.
I worked through the no-start guide and tried replacing the FP relay. A few days later same problem! Car dead on the side of the road. Replaced CPS. This time I just left car idling in my driveway. After about an hour the car died and would not start. Tried pulling codes from the OBD port but I noticed that the OBD interface was not responding at all.
After much investigation I figured out the the CPU on the Trionic ECU was not booting up. There was no clock signal on the board. I replaced the crystal oscillator on the ECU board, put everything back together and the car has been running ok since then - touch wood.
So if you can catch it in the faulty state then see if you can check if the ECU is still alive.
posted by 122.57.11...
Posts in this Thread:
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.
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 -
Your address is: 22.214.171.124 - Using CCBot/2.0 (http://commoncrawl.org/faq/) - Logged.
Site Members do not see red text instructions, skyscraper, nor box ads.
Click here to see all
the Site Membership Benefits!