Mechanics

CHEVY

1991 Chevrolet Cheyenne

1991 Chevy Cheyenne 6 cyl Two Wheel Drive Automatic 95,671 miles

I haven't even had the truck for 2 weeks yet. I had just recently bought the truck, and gave it new plugs, wires, and oil, but the Distributor cap and rotor had been replaced before but not the plugs and wires. Now my truck idles high then low, high then low. I have to constantly give it gas or the engine will die out. Any strain on the engine will cause it to die out, like the air conditioner. When going down the road it has no throttle response at all. Like the truck has no power. You literally have to put the gas pedal down to the floor just to get up to around 40mph. Just revently replaced the EGR, distributor, and rotor button. Any suggestions?
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Skooter2010
July 30, 2010.




Lack of acceleration, chugging, hesitating, bogging etc. 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.
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 30, 2010.


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