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if this is turbo you could have to much oil in and it gets into the turbo and will run on its own

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Q: What causes the engine of an automobile not to turn off even when then ignition key is turned off?
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What happens when the ignition is turned on in a car engine?

The ignition system is powered up and ready to run the vehicle.


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What causes my Ford Mondeo engine still to run when ive switched off the ignition?

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Its not your engine. Its the fan running to cool the engine down. They all do it and nothing is wrong with your car.


How does an engine turn off?

Gasoline engine - spark is cut off when ignition is turned off Diesel engine- fuel is cut off when engine is shut down


Why does the engine keep running when the car is turned off?

Two answers:If it is an old car with a carburetor you could be suffering from a condition called pre-ignition or run on (same thing) the engine will rattle clatter and shake. This is caused by carbon build up. Change the spark plugs, check the mixture, and then try to de-carbon the engineOn a new automobile with injection you have a bad ignition switch or relay.


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