Mechanics

BUCKING

1999 Chevrolet Venture • 6 cylinder • 178,000 miles

I AM GETTING A BUKING AT TAKE OFF & AT ABOUT 30-45 MPH
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CraigT
March 5, 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
Rasmataz
Mar 6, 2011.


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