So I have a customers 05 2.5 turbo that has been having issues for awhile. It came in with a multiple cylinder missfire, cylinder 4 missfire, flashing CEL and cruise and irradic idle.
We cleared the codes, cleaned the throttle body and the #4 coil pack ( we had a good one used one to use for a test).
This seemed to make the situation better for a couple weeks but it all came back.
Does anyone have any suggestions or seen this before?