Engine Performance problem
1998 Ford F150 V8 Four Wheel Drive Automatic 269000 miles
My Ford F150 is fine when I first drive it (10 miles) then it begins skipping, lagging at take offs. If I go at low idle speed it is fine but begins to skip when I give it gas. It does not cut off if I give it enough gas - however it will skip and then take off. It sort of 'shutters' at full throttle.
Thanks for any help - laid off and need this transportation!
Check and test all the following listed below: Oxygen sensor
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)
Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
Cap and rotor