Mechanics

WHEN DRIVING

1991 Mazda Protege

Engine Performance problem
1991 Mazda Protege 4 cyl Two Wheel Drive Automatic 180000 miles

Car tends to hesitate when accelerating especially when trying to get on expressway
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Jmej08
July 19, 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.

Rasmataz
Jul 19, 2010.