Been on these forums for awhile but never needed to post until now. I have a 2001 2.4L grand am. Started to idle rough awhile back, thought I fixed it but it is back now and even worse, I have no idea what it is this time. I have replaced spark plugs, ignition control module, plug boots, Ignition coil pack & cover, crankshaft position sensor, fuel injectors, idle air control, mass air flow sensor and hose, cleaned the throttle body, also went ahead and changed the oil while I was at it.. When I have it scanned it gives a misfire on cylinder 1. Any help would be appreciated on this. I am thinking maybe I got a bad ignition coil pack but I would like some advise before I go any farther.
Misfire
- Thread starter BGV
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assuming the code is P0301, follow and correct if necessary the causes on this link
http://www.obd-codes.com/p0301
http://www.obd-codes.com/p0301