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Yet another TCS problem
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Posted by Robert Sorenen (more from Robert Sorenen) on Mon, 14 Jul 2003 21:55:18 Share Post by Email
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I know there has been a lot of question regarding TCS, but here is another one.

This weekend I was about to drive home from a camp ground. I drove like half a mile and stopped in order to take care of some paper work. After roughly 20 minutes I was ready to go, but when I started my car (SAAB 92 9KT with auto) it stopped at once, and TCS CTRL light came on.
I tried again - same result. The engine ran for 1-2 seconds at very low RPM's (100-200! just barely). Then it stopped.
When I turn ignition to ON TCS CTRL flashed once then stayed on, and the pattern of low RPM before stopping was the same.

I tried maybe 10-15 times - same result.
Then I pressed the pedal down and started the engine and it came on and stayed on as long as I kept the pedal somewhat down. Engine couldn't run by it self, but with pressure on the pedal I was able to get moving (with TCS CTRL on).
I drove for ~ 20 minutes and then stopped intentionally just to see where things where. When I turned the ignition key to ON TCS CTRL flashed once and stayed on. Rather than turning on the engine with pressure on the pedal I removed the fuse for the ECU for like 10 seconds and put it back in.
This time I started the engine the normal way, TCS CTRL did not come on and car runs fine.

All hoses are fine, and in general I have no problem's. However this problem (TCS CTRL on, low RPM then stop and suddenly things are back to normal actually did happen like 1 year ago - and it just came back this weekend.

Does anyone have suggestion to what can cause this. NOTE I'm not sure this is a true TCS problem. I mean would a TCS failure prevent the engine from starting ?

regards
Robert


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