it could be the vats security if you turn ignition switch to on and security light stays on the wire in the ignition lock is broken or if it is a automatic could be safety switchAnswerGenerally, when the engine won't turn over, it's a battery problem. If you hear a clicking sound when you try to start it, that's your solenoid and the battery is most definitely dead. It could also be the starter motor has gone..but the easiest way to tell is to check the battery for voltage first.
.AnswerOn the 1986 and later GM cars there is a potential intermittent start problem that is linked to a computer failure (ECM). It is talked about in Chevy Bulletins. It can also cuse battery drain. The fix is to replace the ECM. I had the same problem with an 88 Blazer. Cost is around $125.00. Also the same intermittent start problem can be had because of the ignition switch. It is also covered in Chevy bulletins and requires the replacement of original switches and keys with newer ones that have a more narrow key way and insure reading of the resistance in the security "pellet on the key itself. Cost is around $50.00 for the switch and $30.00 per ignition key. Remember that once the ECM is replaced then you should have the shop scan for fault codes and get them cleared. Funny things such as uneven idle can happen and even the throttle position sensor will need to be reset. ajcampagnakfpd@AOL.com 4/18/2005
check the battery and connections/cables
He turned on the ignition and then started the engine.
On most vehicles, after the problem is taken care of, the check engine light resets automatically after the ignition is turned off and then the engine is started again. If you have fixed one problem, a second problem probably exists.
The ignition system is powered up and ready to run the vehicle.
It is not supposed to be on when engine is running unless there is a problem.
Climate control blower motor was the fix. The part cost 441 dollars.
Faulty ignition switch.
I had this problem on my disco 1. Turned out to be the alternator, which was replaced and the problem was fixed.
Its not your engine. Its the fan running to cool the engine down. They all do it and nothing is wrong with your car.
Gasoline engine - spark is cut off when ignition is turned off Diesel engine- fuel is cut off when engine is shut down
The actual problem is the starter continues to turn after key is turned off and pulled out of ignition.
It doesn't want to, It's not done running yet... :) Check the ignition timing with a timing gun. When the engine continues to run after it has been shut off the problem is known is dieseling, or pre-ignition. Hope that helps.