Hello all, I just bought a used 2006 Ford F-150 it has the Triton 4.6L V8. Seems to be running ok a little white smoke on start up, but the other night after leaving work at 5am when it was around 10 degrease freezing lol when I started my truck it was idling very rough like it was about to die but it didn't after it warmed up it was a little better but I think I seen black smoke from the rear end, but like I said after it was warm it sounded like normal so I started to head home and got about 15 mins down the road and it started to run very bad like it was bogging down and lost all power if I pushed on the gas all the way I was not picking up any speed but if I let off the gas the truck would jerk very bad and gain speed. But the next day in the morning it started up fine no problem I even drove it around town with no issue Any idea what this issue could be thanks all.

 

1.) Check the air filter and the clamp (the clamp rots out and breaks), which confused the mass air meter.
2.) Clean the mass air flow sensor with (CRC QD ELECTRONIC CLEANER) or a brand that says mass air flow sensor cleaner.
3.) Check the fuel pump driver module located in front of the spare tire. If it is rotted out, water gets in and makes it do funny things.
4.) The coil packs located on top of the spark plugs can and do fail. Check for misfire codes.