CHEVY DRIVES ROUGH, LOSS OF POWER, IDLES FINE

2002 Chevrolet Avalanche

Tiny

avalanche179

December, 1, 2010 AT 6:08 PM

2002 Chevy Avalanche drives rough, loss of power, idles fine. Seems fine at idle and in park when I step on the gas it run smooth but when I accelerate seems to lose power and vibrates the steering wheel. Check engine light is NOT on.

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3 Answers

Tiny

rasmataz

December, 1, 2010 AT 6:15 PM

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.
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 it

Tiny

avalanche179

December, 1, 2010 AT 6:19 PM

Ok. Which of those would be the easiest to rule out on my own. Thanks for your time.

Tiny

rasmataz

December, 1, 2010 AT 6:47 PM

There's no easy way out of this problem could get complicated its not an easy fix you need to troubleshoot to get to the problem and what caused it-

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