Car Jerking

2005 CHEVROLET AVEO
92,000 MILES • 4 CYL • AUTOMATIC
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KJBUSH
  • MEMBER
  • 1 POST
What could cause my car to***** while driving it? It doesn't***** any more or less while accelerating, slowing down or when in idle. It has new spark plugs, a new timing belt and engine damage has been ruled out by my mechanic.
Jul 15, 2011 at 2:43 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
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.
Aug 11, 2011 at 10:34 AM
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