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1991 Isuzu Stylus Repair Question


Topics covered: Sensor, Spark, Spark plugs.
Mileage: 255,043 miles.

Asked on April 14, 2011

91 isuzu stylus

I was driving down the hight way no problems with it then the car starts******** then my check engin light comes on the idle changes or it just****** at what ever speed i go i replaced alltinator fuel filter cap rotor spark plugs a wires but it went to the coast and back with no problem and when it****** i get bad mph what does this mean
Avatar Asked by jonboy 123

Answer

Replied on April 16, 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.

Tiny Answered by rasmataz
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