2002 Lincoln LS

Engine Performance problem
2002 Lincoln LS V8 Two Wheel Drive Automatic 89000 miles

at speeds of40 t0 50 mph she misses and cuts out alredy replaced 3 coils and sparks plugs.
August 1, 2010.

Lack of acceleration, chugging, hesitating, bogging, misfiring etc. Could be caused by one of the following below: Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note: If it doesn't apply disregard it.

Aug 1, 2010.