2003 156 2.0 JTS Misfiring
This is my first post here, though i have been lurking here for a while reading all the jts misfire threads to try and find the cause of mine.
I have a facelift 156 2.0 JTS Lusso, it misfires while idling and when you give it some power but slowly building the revs after 2000rpm it's generally sounds ok.
the guy i got it off of said it was misfiring on cylinder 4 coil packs seem okay, plugs are all good. disconnected each coil pack 4 seems to be the one that makes the least difference.
put a bottle of forte in her makes no difference
No engine management lights, no codes when plugged into MES just the ones i caused by swapping coil packs I cleared them, no errors after left her running and revved her a bit
one thing is i think i have strange lambda sensor readings but im not sure what they should be at anyway?
what should the pre cat and post cat lambdas be within?
Here are the my graphs from MES today engine at temp idle and 2000rpm
Last edited by kennwood; 30-07-14 at 22:23.