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Just in case you're in any position to ask questions of the shop...
When cranking, does the tachometer jump?? You said there's spark, but really the ECU has to see the tachometer signal or it won't run the fuel pump. Cut the wrong wire at the ECU and a perfectly good fuel pump isn't gonna run.
I know I said check the tach, and it's a good thing to check. But in fact, the tachometer and the ECU each get their tachometer signals from separate circuits. So a bouncing tach isn't an absolute test. If the shop really knows Saabs, they 'should' know just what to check. (I don't have a circuit drawing for '90.)
Posts in this Thread:
- Odd no start issue, please help (long), knoxsaab, Tue, 25 Apr 2006 08:32:58
- Re: Odd no start issue, please help (long), JimBlake
, Wed, 26 Apr 2006 11:30:42 <-- Viewing This Message - Re: Odd no start issue, please help (long), GaryJ, Tue, 25 Apr 2006 11:07:41
- Shot in the Dark, Rocket900S, Tue, 25 Apr 2006 10:25:30
- Re: Odd no start issue, please help (long), knoxsaab, Tue, 25 Apr 2006 08:44:58
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