I have a 2001 lighting and im on the third coil pack in the number1 CYL. My cats were clogged so the dealer ship replaced them. Now there turning purple. I was on the high way and I stomped on it. My RPM got to the shift point about 5500 and then i heard to loud pops like a back fire, the transmision didnt shift so i let off. Ever since the engine has been running as if the coil is bad again. What is causing this to happen and why are the cats turning purple? There are no mods other that the innercooler clean out and oil/sep. Please help. If I cant fix it im going to have to sell it.
Please help me.:bowdown: [
Please help me.:bowdown: [