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The problem is called "dieseling" or "engine run-on" and happens primarily in cars with carburetor engines. It occurs when the engine is shut down because fuel in the cylinders is being ignited without a spark, but by a hot spot in the cylinder. The problem isn't as prevalent in cars after 1990, since most are now fuel-injected.
There are several things that can cause dieseling - refer to the link below to view them.
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What to do if Honda start then turn itself off?
Get a new car
Time when trying to start the car engine turns but will not start turn key off then on again it starts right up?
Time when trying to start the car engine trns butwill not start turn key off then onagain it starts right up
How do you turn off inspection on vw polo 1999?
Key off Press and hold clock button on dash turn key to on positions (do not start car) and wait 10 seconds turn off key and release button Start car ... indicator should be reset.
When does it mean when you can not start your car will start but when you turn it off for about an hour does not want to start?
It would help to know what vehicle and engine we're talking about. Offhand it sounds like a failed solid state component.
What happens when you turn the car on the motor start shaking then the car cuts off?
You need to check your timing belt if it is not in time it will not start or run for a little then shut off.
How do you turn off a car with a push start button?
you push the button again
How do you turn off oil change warning on 2009 Town Country?
turn the key to the "on" position, do not start the car and tap the gas pedal 3 consecutive times. After that is complete turn the car off and then turn it on again.
Do you lose less gas when you let your car motor idle for 3 minutes or when you turn it off and start it again?
Cheaper to turn it off.
What if your car will not start the security light stays on .what do you do?
is your security light flashing? turn the key on, leave on for 10 mins, turn key off let it sit for 2 mins, start car
How do you turn off the headlights on a 1997 Lumina?
With the engine off, engage the parking brake, then start the car. It's the only way to turn them off. But obviously you cant drive with them off.
Why does a 2001 Grand Am crank good but not want to turn over and run?
Key protection. Take key out. Put back in and turn to on position. Leave it there for 15 minutes. Turn car off. Take key out. Put key back in and start the car. The computer has been reset.
Can a car start and turn off due to a bad starter?
No, once the car is started the starter is no longer required, it then disengages.
