I have a misfire code on number four cylinder and a check engine light. I have looked over the posts and started to eliminate problems. I'm pissed that I let her buy it, but now I need get this running and smoged.
my niece just bought a used 1998 with the 3.8 V 6 (not supercharged). I ...
Replaced new plugs and wires. Delco
checked fuses
Checked for spark
Switched the coil packs.
Switched fuel injectors
good compression
no change
the code reader is showing 160+ misfires on number four only. all others 0 misfires.
because of antifreeze in the number 4 cylinder and it was overheating...
i also replaced the lower intake manifolds. While there I did see some small corrosion on the manifold from the antifreeze. I did not think it was significant.
still have a number four misfire. I Still can't smog it.
i saw someone say to check for wiring problems. Time for a specialist???
thanks for your thoughts.
greg