Ford Repair Questions? Ask a Mechanic for Answers ASAP
It may have jumped time. Have you narrowed it down to which cylinders are to blame, then confirmed there spark plugs are firing and injectors are pulsing. Have you done a compression test?
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At those coils, is there power to one wire with the key on?
Do you have a noid light to check the ground pulse on the other wire to the coils while cranking or running. This will tell us if there is no ground pulse to look at the PCM and if there is ground pulse to look at the coils or plugs.
No need to replace anything until you find out what if any signals to the coils are missing.
Neither of those things can result in some coils not providing spark.
Thanks, ***** ***** we need to check that ground pulse at the back of the PCM connector using a pen to go in beside the wire so the PCM is still plugged up. If the ground pulse is not there either but is on the cylinder 4578 then it is the PCM to blame. Do you need a wire diagram, I sent an offer on the 17th that allows me to attach one.
Pins 1-26-27-52-53-78-79-104 are the coil pins at the PCM.