PCM misfire 2020

[Jeff Boone]

2020 Stopped at store. Got back in check engine light flashing and running like **** unless you punch it. App said PCM detected misfire. Any ideas???

 

[FordTechOne]

Mods? Check for moisture under the engine cover, if it gets into the spark plug wells it can short the coils.

 

[Jeff Boone]

No mods. Will check for moisture. Haven’t been around any serious water though. Thx!

 

[CoronaRaptor]

Mice, chewing the wires?

 

[Jeff Boone]

Bad fuel injector per dealer

 

[smurfslayer]

Bad fuel injector per dealer

My Lincoln had the same issue last year but it was much, much less severe. got the codes, I pulled and left alone, rather than clearing. The car was running fine from visible/audible observation, but internet lore held that you’d better take the vehicle in for service. I called and they sent a loaner out ( Lincoln sends a car to you, rather than you coming to them, scheduled of course). It took the tech some time, and apparently several engagements with engineering to run it to ground - and, they never definitively identified the issue so they swapped out all the injectors and the entire rail assembly.

I think they had it about 8 days or so. They will square this right away and that will be that.