BUCKING

  • Tiny
  • CraigT
  • 1999 Chevrolet Venture
  • 6 CYL
  • 178,000 miles

I AM GETTING A BUKING AT TAKE OFF & AT ABOUT 30-45 MPH

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Saturday, March 5th, 2011 AT 5:50 PM

1 Reply

  • Tiny
  • rasmataz
  • Member

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.

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Sunday, March 6th, 2011 AT 4:02 AM

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