Intermittant misfire - Saab 9-3SS Bulletin Board - Saabnet.com
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Intermittant misfire
Posted by Peter Robson [Email] (more from Peter Robson) on Wed, 31 Dec 2014 00:02:59
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2003 9-3 ss 156K runs normal sometimes but most of the time it is a hard start then obvious misfire esp at idle when it may stall. Has codes for 2 or 4 fuel injector circuits open. Codes return after clearing even when engine feels ok. Also found O2S1 at .9V, Could this be a bad slice at J46? Codes for all 4 injectors indicates a common wiring problem? The fuel injector connector seems to be good. Anyone come across this before?
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