96 cavalier P0440 Code
jaa70
03-10-2010, 07:00 AM
My sons cavalier has a P0440 code, engine is idling excellent, but when accellerator depressed engine knocks (revving/accelleration), gas cap seem good. I know the code is Evap emissions, could be vacuum hose or cannister, but would this cause the knocking. (ETS and Engine light on)
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