I've got a toyota sprinter AE91 with a 5A-F engine... Why does the engine still run even tho the ignition is switched off? It runs very slowly and then shuts off once the ignition is switched off...
Does it sputter and kick while it is shutting down? This sounds like a timing problem. Your timing may be to far advanced.
To fix this, there is one single bolt at the base of the distributer that holds it in position. It will probably be a 1/2 in bolt or 9/16ths but being toyota may be 10 or 11 in metric. Put the emergency brake on and make sure it is neutral or park if automatic. Start the car. While it is running loosen the bolt at the distributer base and turn it counter clockwise just a hair or two. You should mark the spot with chalk or crayon where the distributer is located before you move it incase you need to return it to the original position. Listen to the idle while you turn the distributer to lower the idle just a little but making sire it still runs smoothly. The car should be warmed up before doing this. Take it for a drive and make sure it was not turned to far and you still have a smooth drive with no missing or hesitations or wanting to quit while stopped.
If this does not cure the problem then put the distributer back to it's original spot that you marked. It may be an ignition switch going bad on you and is allowing electricity to continue to flow to the coil after the key is off. The switch may need to be replaced.
I hope this is of some help, Keep me informed, The Raz
It still sounds like the timing though I am wondering if the float in the carburetor is sticking. It it was then it would allow gas to continue to flow into the carb after you shut it down. There is still enough pressure on the gas line to do this. I hate to make you do something I am not sure of though. Your piston area should not be that hot to ignite fuel after shut down except unless your timing is to far advanced and that can get it pretty warm. I guess I am at a loss from here. You did the only things I know will cause it.
I wish you luck though and if I think of something else I will let you know. Raz
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Hi Raz thanks for the for the solutions. Well i did check the ignition timing as even i though i was far more advanced but i didn't work at all. Then i moved on to the ignition switch, and even that is perfectly alright. I did try something else a little while ago, when i switched the ignition of, while the engine was sputtering and kicking, i pulled out all the spark plug cables. And the result was the same!
Also another thing i happen to just try was, when the engine is sputtering and kicking, i just floored the throttle pedal, and after a couple of seconds it shuts off...
Could it be something to do with the carburettor? Is excess fuel going in to the intake even tho its switched off? And could compression be taking place by the heat of the engine?
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