hesitating

2005 CHEVROLET IMPALA
90,004 MILES • 6 CYL • AWD • AUTOMATIC
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RMGORDON
  • MEMBER
  • 2 POSTS
i have an 2005 chevy impala and it hesitates when i drive it and i have to play with the pedal. The car is full of gas, but when i continue topress the pedal sometimes i hear a pop and it is embarassing
Jan 21, 2011 at 9:41 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Hesitation:

Inspect and test all the following listed below:

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.
False air leakage.
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.
Jan 21, 2011 at 9:43 PM
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RMGORDON
  • MEMBER
  • 2 POSTS
see i let my gas get really low and went to Kangaroo gas ( and i wasnt suppose to) and i put $10 in but then the next morning thats when my car started hesitating, so i went and filled it up and added STP in it and it ran smooth for a couple of days and now its back at it again, then i added this sea foam something that ad auto parts advertise that was good, for hesitating and cleaning alot of areas it did good today until later on this afternoon it started back hesitating
Jan 21, 2011 at 9:52 PM
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