Misfire at low Tps???
Ok so I've been chasing a misfire for some time now. Its noticeable at light load cruise and decal especially when the TCC is locked. Sometimes enough to unlock the TCC and have a P0300 pending when I would check the codes. This morning I decided to log each cylinder to see if it was cylinder specific and it was for the most part. #'s 1, 4, 7 and sometimes 6. Mostly between 1k-2400k ish. above 3k it would clear up. at idle it would be bad sometimes, sometimes not. Fuel trims didn't seem to affect misfire much if at all. Now the funny part is the vcm controls. When I command an engine speed of say 1200 rpm its smooth as silk..........give a little throttle and BAM!! Misfire all over the place. Basically stock car with ported intake and tb. Please Help!!
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Originally Posted by RichsGreyGT
