• Tiny
  • rthorn78
  • 2004 Chevrolet Astro
  • 6 CYL
  • 2WD
  • automatic
  • 104,000 miles

I have a 2004 chevy trailblazer and when I have the airconditioning on sometimes on or off it acts like it is bucking or******** forward and backward a little. No trouble codes have come up yet.

Monday, June 6th, 2011 AT 3:47 PM

1 Answer

  • Tiny
  • rasmataz
  • Member

Could be one of the following below -check and test: Oxygen sensors.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position 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.

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Saturday, August 6th, 2011 AT 1:58 AM

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