2000 Chevrolet S-10

Engine Performance problem
2000 Chevy S-10 6 cyl Four Wheel Drive 197500 miles

Engine hesitation on exceloration after engine is at running temp have replaced Mass Air Flow sensor,
MAP Sensor and Throttle positioning sensor still having the hesitation.
July 22, 2010.

Possibilities: Inspect and test all the following listed 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.

Jul 22, 2010.