Just got done doing my lift an tires on my tb. Went to go to work it started to miss. I took it home an found i had a bad coil. I replaced the plugs an the bad coil. Cleared all my codes. Only the missfire on c#4 . Drove it that night ran fine. Next day is was missing, but only threw a multi cylinder missfire code. Went an had the bg fuel system cleaning an it got better but if i have the ac on or sitting at idle it still does it. But doesnt throw a code i keep checking. I dont know what to do. Im gonna replace the pkugs again back to stock acdelco an hope that fixes it.
