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Intermittent 'Check Engine' light 700 1991

posted by  chris herbst on  Wed Jul 24 13:18 CST 2002
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last visit: Mon Oct 20 20:32 CST 2014
[RELATED]

You can check codes yourself, but I'm going to guess that the check engine light is caused by low RPMs. That is, as far as I am aware, the only reason that the check engine light can shut itself off, since it's only really responding to the signal that shuts it off to begin with (when the car is running).

Watch the tachometer next time it happens to see if the RPM is below around 700. It could be just a small operational issue rather than anything serious.
--
1992 940 wagon, 72k
as well as others.






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New Intermittent 'Check Engine' light [700][1991]
posted by  thejen  on Tue Jul 23 10:40 CST 2002 >


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