Engine Performance problem
1992 Ford Aerostar 6 cyl Two Wheel Drive Automatic 160000 miles
Van has sat for a while I ran a can of sea foan cleaner with tank of fresh fuel after a week or so I was going to change fuel filter the van now at times will run rough it just shake and clunks and barely run you can press gas pedle to the floor with no response if you turn engine off for 5 minutes or so it will fun find till this happnes again
Inspect and test all the following listed below: Oxygen sensor.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
Fuel pressure regulator leaking, fuel filter or defective fuel pump.
False air leakage.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.