Originally Posted by MolaKule
Originally Posted by exranger06
Replace coil packs on an as-needed basis only. If the car is running fine with no misfires, leave them alone. If one coil goes bad, replace just the bad one and leave the rest alone.
I have never had a coil failure on any car with a Coil Over Plug. I replace plugs every 75k miles.
If you have a coil or plug misfire, the ECU should detect it and give you a code when the CEL comes on.
Even my older 1999 S-10 V6's software picks up a plug misfire.
You must have never had a Ford Modular engine. They blow the coils all the time. And in the trucks they won't set a check engine light.
Originally Posted by exranger06
Replace coil packs on an as-needed basis only. If the car is running fine with no misfires, leave them alone. If one coil goes bad, replace just the bad one and leave the rest alone.
I have never had a coil failure on any car with a Coil Over Plug. I replace plugs every 75k miles.
If you have a coil or plug misfire, the ECU should detect it and give you a code when the CEL comes on.
Even my older 1999 S-10 V6's software picks up a plug misfire.
You must have never had a Ford Modular engine. They blow the coils all the time. And in the trucks they won't set a check engine light.