I have a 2001 GT with an random missfire. So far the scanner has recorded missfires in 2345 cyls. But not consistantly. It only happens when the engine is under a load. It will not happen in neutral, park, or power braking. Primarily during acceleration especially up hills and going to pass.
I have changed the plugs and wires with good delco equipment. This afternoon I am going to swap coil packs and ignition modules to see if that fixes. Then I am going to ohm test the injectors to see if that is the problem. If it isn't either of those I will test crank shaft position sensor.
From there I have no idea where to go or what to check.
Any ideas?
