If the knocking noise is still there, most probably you did throw a rod or have some worn bearings that might still be salvageable with bearing replacement.
If keeping the gas pedal slightly depressed keeps engine running, the idling speed is too low and turning the idle up might work but cleaning of the throttle body and EACV (IAC) would be recomended before idle adjustment.
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Thursday, November 15th, 2012 AT 7:29 PM