It's called "run on" or "dieseling." There's a lot of things that can cause it, follow the link:
http://www.mgaguru.com/mgtech/engine/ro101.htm
or
http://en.wikipedia.org/wiki/Dieseling
2007-10-12 05:10:02
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answer #1
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answered by This is SPARTAAAA! 5
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You must have an older truck with a carburetor for it to do that.On the base of the carb is an electrical solenoid that extends when the ignition is turned on and retracts when the ignition is off.It's purpose is to allow the carb to totally close to prevent dieseling.A simple way to work around this quirk is to shut it off while still in gear and foot on the brake (automatic trans) or with a stick,let out the clutch in gear to stall the motor.
2007-10-12 14:14:11
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answer #2
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answered by wildmanny2 7
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Dieseling or engine run-on is a condition which can occur in spark plug gasoline powered internal combustion engines whereby the engine keeps running for a short period after being turned off, due to fuel igniting without a spark.
Click this: http://en.wikipedia.org/wiki/Dieseling
It it exlpains the cause and how to fix it.
2007-10-12 12:10:04
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answer #3
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answered by Mr. KnowItAll 7
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It is probably idling too fast and is "dieseling". Have the idle speed checked and also check for a vacuum leak.
2007-10-12 12:10:17
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answer #4
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answered by TomB 3
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Check the timing also.
2007-10-12 12:32:33
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answer #5
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answered by mrb_2131 2
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Buy gas with higher octane. That should cure it.
2007-10-12 12:15:54
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answer #6
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answered by Eileen K 2
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