2000 F150 5.4 Triton - Rough Idle
I inherited a 2000 F150 Supercab this past Jan. It was an AZ truck that I drove to IL. The truck has 52K and was babied by the previous owner (my father-in-law).
It ran with no issues while I was in AZ for a couple of weeks and then on the drive home, it ran with no issues either. Once we hit Chicago the temp was 19. The next morning I went to drive the truck and after letting it warm up for 10 mins I noticed that when I came to a stop the engine was idling very roughly. It stopped as soon as I drove again. The check engine light came on and was on for 2 days. The check engine light cleared before I could get the code.
Fast forward to March. The rough idle happened on a couple occasions but the check engine light never came on again. I went to drive the truck this morning and it is running rough through all speeds. The engine is NOT idling roughly when in Park or neutral though....???
Other than knowing the truck had oil changes every 3000 miles I am not aware of the maint performed. As the previous owner has passed away I also can't get those answers.
I'm guessing it is some sensor since it is not happening in park or neutral. Maybe a fuel filter/fuel pump?
Any suggestions would be greatly appreciated.