i just got this truck and a the pick up coil went out. my mechanic changed it out and now it misses. it only does it after its warmed up. he said he thought it was some sensor that goes bad so he replaced that also. anyone know what could be causing he miss. the wires were just changed.

 

it could be that one of the wires has come in contact with the exhaust manifold and is now grounding out. That has happened to mine 2 times now both after changing out the wires. Go check them and look for signs of melting on the wire. I fixed it by zip tying the wires up so that they can't come loose.

 

it could be a bad wire still.... sometimes new wires have some flaws

 

i checked teh wires. one of them was kinked bent 180 degrees right at the cap. i took it off and put it back on and it stopped missing. however the next day it missed again. i turned around to head home and halfway there it stopped missing. any other suggestions or should i switch out the wires first.

doesnt miss till its warmed up
misses bad/ bucks
stops missing after it does it w/o turning off the truck.

 

doesnt always stop by itself, just the last time

 

Sounds like you should try some new wires, then see what happens. You don't need anything crazy either, just go to Napa and pick up a cheap set.

 

Also what plugs are you using?

 

auto light i think, but they were fine before the pick up coil went out