just purchased this truck during the rainy period and there was a bad coil on the back of Bank #1 cylinders the dealership put on a new coil and mentionrd the corresponding spark plug was nasty so they changed it. after a few miles the check engine light came of with the code P0240 I think anyway it said Catylist not functioning at expectatons so my question is which would be more likely the problem the converter or the oxygen sensor?
Nov 13, 2018 at 7:48 PM