• Tiny
  • amazonnurse
  • 1989 Chevrolet Truck

Engine Performance problem
1989 Chevy Truck V8 Four Wheel Drive Manual

My truck runs and starts great, however it occasionally bogs down then will come back and drive fine. Sometimes it does it 6 or 8 times for a 10 mile trip sometimes not at all. I have had it bog down and not straighten up then it stalled. It did start back up and drive fine. Ive had the plugs, wires, fuel filter, cap and rotor replaced and fuel injector cleaner placed in it. I love my truck. Can anyone please help me figure out what I need to do to get it running up to standard?

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have the same problem?
Friday, June 18th, 2010 AT 2:44 AM

1 Reply

  • Tiny
  • rasmataz
  • Member

Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking, fuel filter 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.

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Friday, June 18th, 2010 AT 3:32 AM

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