Anti-dieseling solenoid questions

[howzzzit]

Originally Posted by kwmech

Majority of these solenoids were on AC trucks and didn't engage without AC on (of course) and the slight depression of the gas pedal to let it actuate. They will not usually just step it up on their own. Base idle is set by the screw on the carb and solenoid adjusted by the hex. Only about a 150-200rpm idle difference

My 72 has a/c and this solenoid. Solenoid retracts key off and extends key on without a/c being on. Operation in the service manual.