93 F-150 302 EGR Valve issues. Intermittent bad missing. Started out only once in a while after a very! reputable shop did a rebuild. Overtime the truck has been back to that shop several times. They are stomped. A second shop also can not figure it out... After playing w gas pedal it will all of a sudden straighten out again. Feels more like a sensor miss or electrical miss vs a cylinder miss. Over two years it is so bad that intermittent is almost continues. Will do it at any time. Can do it at cold start, warm start, driving, idling, hard driving all the way from Alabama to Iilinois, AC on or off. Winter or summer temperature does not matter. It has never left me stranded although I don't feel comfortable going long distances now. Its starting to not wanna straighten out at all. Once it does straighten out it runs perfect although since the shop rebuild it never felt strong or having a lot of power. Fuel filter replaced. EGR Replaced with Ford part, codes cleared, no improvement and code comes up again.

 

65 views and not a single answer. I wish I could help you but I know next to nothing about newer electrical junk. You might consider asking in the engine forum for your engine.