2003 Ford Explorer • 100,000 miles

Only happens coming off of cruise around 40 mpr during 3/4 pedal acceleration.
Cleaned Mass air flow. No change
Drove with vacuum line off of Erg. No change
December 18, 2011.

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.

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 and keep testing

Dec 18, 2011.