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Started and stalled, twice. V70-XC70 1999

posted by  KlausC on  Wed Mar 25 17:07 CST 2009
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

My uneducated guess would be a vacuum leak. Unmetered air entering the intake manifold will trigger a lean condition for the O2 sensor, that causes the ECU to leave the injectors open longer which will foul the plugs. Couple that with a colder engine and that will be much too rich.

No codes with the above scenerio, because the ECU thinks it is doing the right thing.
--
My name is Klaus and I am a V ♂ lv ♂ holic.






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