[76shovel]

Thanks jtec I do not have a reader here right now. What I am looking for now is confirmation on spark plug wire routing. The coils are on 1,3,5. do the wires run straight across? ie 1 to 2, 3 to 4, 5 to 6?



Mark

 

[76shovel]

Well....



The initial misfire was probably resolved with the new coil and wires. The subsequent issues with #4 and #2 fouling were due to those wires improperly installed (swapped). No I didn't do the wires but it was just a mistake that won't likely happen again. FYI I have found the wires are numbered as to which cyls they run to right on the casing. Live and learn.

 

[76shovel]

Was the above order I wrote down correct? My 3.7 has a coil on every cylinder.

Sent from my SM-J700P using Tapatalk

You are correct.

Thanks!

 

[76shovel]

Well I am back. Even though the motor is running smooth as glass she is getting a code for misfire on number 4 and a Catalyst efficiency below threshold (bank 2). The check engine light is coming on about every 30 miles with the issues. since it was #2 and #4 that had the wires swapped I am wondering if we plugged up the cat on that side, is that side bank 2? I just swapped plugs between 4 and 6 to see if the problem moves.



What do I do about the cat fault, replace it. In the old days I'd just cut it out or bust up the guts. Afraid these newer cars might be too smart for that.