A number of engines, including GM ones, use an idle stop solenoid or high idle solenoid. It closed the throttle further than normal idle speed when the key was turned off to prevent dieseling.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
