2000 Chevrolet Impala Repair Question
Asked on April 8, 2011
Car stumbles at acceleration
Car stumbles from dead stop. Does not trip any codes. I have replaced almost every sensor including plugs and wires with no effect. Any suggestions.
Asked by LARRY MONTGOMERYAnswer
Replied on April 8, 2011
When was last tune-up?
Could be one of the following below:
Oxygen sensor.
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
Replied on April 8, 2011
Use carburetor cleaner to clean the throttle body (inside where the throttle plates are) and the idle air control solenoid.