Is it ok to drive a truck with a bad coil / spark plug?

carringb wrote:
Fords will shut off the injector once it sets the code, so there should not be any adverse affects.

My 97 F150 with a 5.4 had a miss and it did destroy the cat. Not sure if that early model had the fuel injector shut off or not?

I had to cut a relief in the exhaust just to get to the repair shop...100% clogged cat is no fun.

Thanks!

Jeremiah