97 Ford expedition code P0354

[Mwezzygreen]

I need help...I'm trying to figure out if I need to order Spark plug wires or not! I just installed a new spark plug in the back. The car starts but cuts off after like 3 secs. 3137509263 Mel

 

[jr1under]

Did you try swapping coils 3 and 4? That will tell you whether or not the coil is bad.