1989 Chevy Truck engine bog

1989 CHEVROLET TRUCK
Avatar
AMAZONNURSE
  • MEMBER
  • 1 POST
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?
Jun 18, 2010 at 2:44 AM
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
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.
Jun 18, 2010 at 3:32 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.