Date: Tue, 18 Jan 2005 12:18:08 -0500 From: "The Malt Hound" <bbmenospamat> wrote in message news:3549esF4gsrv6U1nospamvidual.net... > In my 1992 9000 2,3l 16V Turbo the red traction control lamp was always > on. > I was quite happy about this, since the TCS is a pain and there is no way > to > switch it off in this model. A few days ago the engine suddenly lost > performance and I had to jump hard on the acellerator to keep the engine > running. This was very unlikely, since this model has got a drive by wire > system which normaly doesn offer to much back force. > > For the next few days I took my other car and left the Saab untouched. > Yesterday I started the engine again and it was perfectely ideling. It > easely went up with the revs when touching the accellerator which now felt > quite normal again. After 3 minutes of idling without moving the car the > old > troubles came back and the pedal was very hard going again. The engin was > very reluctant in taking on speed. > > When the troubles started I noticed a white flashing TCS light in the > odometer.( I never have seen this before, since the entire TCS was not > working). It seems that the TCS detects a wheel spin and tries to reduce > the > engine power by closing the throttle. > > The only strange thing is, that at this moment the car was standing in > front of my home, without any move!!!! > > Have you got any idea how to solve my problem. Is the TCS part of the ECU > or > is it a seperate black box? What you are describing is called "limp home" mode. The TCS light flashes and the Throttle switches from fly-by-wire to a mechanical connection that no longer idles well. UNfortunately, I have seen this all too often on bith my '92 and '93 9000. The ECU will go into this mode (limp home) with any type of serious fault. The last time I had it, the cause turned out to be a bad spark plug. The mis-firing was detected. I've also seen it caused by a vacuum hose that got blown off and a bad MAP sensor. It is not at all likely that the ECU is the problem, but something else. Now comes the fun part. You can try to get the codes from your car's ECU. http://www.troublecodes.net/Saab/ This may be helpful. If not, you will probably have to bring it to a SAAB dealer for code retrieval as the tech2 scan tool is very expensive and is not likely to be found anywhere but the stealership. Even our local SAAB indy specialists don't have the ones for these cars. -Fred W
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