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I'd look elsewhere 900 1993

posted by  Vladimir on  Fri Nov 16 02:48 CST 2007
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last visit: Sun Oct 5 18:40 CST 2014
[RELATED]

Ok, the check valve is a non-issue, then. I will try to get to the temp sensor measurements, but since this does not happen very often I suspect I will have tough time catching it. It seems like the dual temp sensor (the one that matters) is not so easy to replace, so it would be nice to be sure it is bad before going after it. The CPS, I am really not all that sure is a culprit here. I've had bad CPS before (not on this vehicle) and the symptoms are mostly present during running, not starting. If the ECU does gets a bad signal from CPS the engine just misfires, doesn't idle, etc. This is not at all what I am getting. I am getting a symptom where the engine cranks and does not start or even try to start (as in catch and stall). Then, after a few attempts it starts as if nothing is wrong. and runs all day long with no more incidents. Then the symptom may not repeat for weeks. I would think a bad sensor would be much more persistent in its character, but I may be wrong.

I'll find the pins 13 and 5 and have a meter ready next time I get a no start. See where that leads me.

Thanks.
--
Vladimir. '98 S70 base, 5-speed manual - his, '93 945 (approaching 200K miles and rolling on...) - hers






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