I have '92 ( I think) Chevy Beretta, and the engine wont shut off when I switch the key off. What are some likely causes?? And fixes.
In the olden days, we would use a better grade of gas or retard the timing. Since you can't touch the timing, try some better gas and stand on the throttle a few times to blow cylinder carbon out the tailpipe. Get the RPM's up there and glace at the exhaust in the mirror. If it's doing anything, it will leave a dark cloud.
let it in gear when shutting down
If it's idling too high & dieseling (chugging & shaking) when you shut it off it's most likely a vacuum leak. If it's idling normally but just keeps running when you turn the key off it's most likely the ignition switch is bad or the rod that goes from the key lock has come off. HTH. -Jim
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