Misfire 03 deville. P0208 p0300, started off with p0308 as well then went to random changes plugs coil packs fuel injector #8 map, maf sensors. Checked volts to injector and for Shorts from pcm to injector. Haven't checked compression because after I've took to different mechanics it runs perfectly fine. And they claim they done nothi g but look and reset with there computer. About 3 days of running smooth SLOWLY misfire comes back. First only when I start the car then will go away to having to drive about a mile to finally heavy nonstop misfire. Pcm?
have the same problem?
Monday, December 28th, 2015 AT 5:07 PM