Have you checked the coil's ?
the injectors....
The detection of engine oil on the spark plugs of the 2000 Ford/Mercury Grand Marquis is indicative of a mechanical condition. This is a common symptom of worn valve seals or possibly the guides. This wear may be allowing for excess oil to flow back into the cylinder. This can result in emissions problems and or higher engine oil consumption.
Injectors, timing, low cylinder pressure.
system glitch or a short
Probably clogged injectors. I recommend using a few tanks of Shell's Highest Octane, and this will clean them, then go bback to your regular octane gasoline. David
p0302 is cylinder 2 misfire, you need to fix the cause of the misfire. Possible causes are plugs, coils, injectors......
I'm not a mechanic / technician but I BELIEVE if the fuel injector is restricted so that the proper air - fuel mixture is not getting to an engine cylinder , that an engine cylinder misfire can occur ( that is only one of the causes of an engine cylinder misfire )
Overheating, carbon buildup, defective fuel pressure regulator, defective injectors that are bleeding off.
You got a short somewhere. Might be in the wiring, might be in the element itself. Either that, or you're overloading it.
That's something you would have to look at yourself, we can't give you an answer unless you tell us in more... er.. detail.
Isc motor is stuck or sticking causing a "blowing over bottle" effect in the intake tract.
Probably a bad front wheel bearing/hub assembly with the abs sensor in it