• Tiny
  • Rpmjr
  • 2006 Chevrolet Impala
  • FWD
  • automatic
  • 57,000 miles

06 Impala SS 5.3 w/ 55K mi developed a hesitation when hitting the accelerator (like when shooting out in traffic). Dealer can't find the problem. Any ideas?

Friday, May 27th, 2011 AT 8:37 AM

1 Answer

  • 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.

Was this
Saturday, May 28th, 2011 AT 3:13 AM

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