I should have mentioned how the anti-dieseling solenoid works. When the throttle is adjusted for curb idle, the butterfly is open just a smidge. When the engine shuts off, if there are carbon deposits on the tops of the pistons, they can be glowing hot enough to ignite the mixture. Since the throttle is closed so much, and there is no real ignition spark, it 'diesels' or barely runs. You may have heard engines clanking and wheezing as they shudder to a stop. Sometimes it tries to run in reverse, which is worse. So the solenoid is there to extend and set the curb idle when the ignition is in 'RUN'. When the ignition is shut off, the solenoid releases and the throttle is completely closed, stopping the engine cold. The problem is most prevalent on high mileage high compression engines with a lot of carbon build-up. But early smog engines suffered too as fuel mixtures were set very lean. Since you have a low-to- medium compression engine, that just had the combustion chambers cleaned, you should be fine. PS- look in the transmission section for the kick-down.