Gsauceman

1997 f150 4.6. The engine seems to idle and rev just fine. The hesitation, miss and lack of power happens when I'm accelerating and at times it seems to clear up and regain power on and off until I slow down and accelerate then the symptoms start again. I have put new plugs and wires, swapped coil packs around, swapped injectors around and don't seem to have any vacuum leaks. The previous owner gutted the cats so I don't know if that could be causing my issue. Could an O2 cause a miss on a single cylinder. I just not sure where to turn here.

akdoggie

P0304.....is a misfire of the #4 cylinder. This is the one at the very back of the engine on the passenger side. Possible items.....spark plug, ignition coil or injector.

P1131.....02 sensor problem. Bank 1, sensor 1. Check the voltage on the wiring for correct voltage. If voltage is not correct, replace sensor, if wiring is okay.

Both of these two together could be a sign of an intake manifold leaking also.