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I doubt that the switch is bad since you've already replaced it. Check underhood relays to see if one is staying on, feeding power back into the system. Does everything stay powered up if you unplug the ignition switch? good-day!
When you start it up don't completely release the key from the crank position, let off just enough to stop the starter, if the engine continues to run the ignition switch is defective, a common problem in this year. This is not the lock cylinder but the electrical switch located down at the bottom top of the steering column that the ignition key cylinder actuates via a long steel rod.
You mean it's hot? Don't run it if it is..................that's a sure head gasket blown or worse. If it runs a few minutes and dies,it could be the fuel filter plugging badly.
Sometimes an ignition with the computer chip or whatever in the key will stop sporadically.You need to give more details.Sounds,slowing,backfiring,jerking,etc.? don-ohio
you can remove fuel pump fuse in junction box under hood to kill engine as for key if you look under the steering column near ignition switch you will see a little square plug remove plug and look in hole you will see a little plunger sticking out of a solenoid pull down on plunger and key will turn to off position either the lock solenoid is bad or you have a activation switch problem
This sounds like the ignition switch is sticking/hanging & allowing the engine to continue to run. When you put the fuse back in, do the ignition lights come on, if so, then that should definitly be the problem.
You can try to wiggle the key from on to off several times when you shut it off to do further testing & you may see that it will shut off that way. More proof it's the switch.
Hi Candie, if you have air, fuel and spark it should run. Getting to the fuel side-"is fuel getting into the engine?" Your ignition may work, your starter may work, fuel pump may work, but if you have an ignition key with a resistor inside it (little silver piece of metal in the plastic of the ignition key) the key, it could be bad and will shut down the fuel injector. It's part of the security system if some idiot tries to break the steering column to steal your car. It won't run. I have a 92 Z28 with a 350 and I had to get a new ignition with resistor and correct resistor ohm key. About $400.00 bucks but if you search around Z28 forums there are ways to bypass this for less $$ if you want to.
1993 Mitsubishi 3000 GT stalls for no good reason, you never really know for sure exactly when it’s going to happen. It might start up right away, or after a few cranks. It may be hard to start in the first place. This could be caused by a faulty ignition switch, and could be easily repaired. .5- If the engine cranks but wont start, hold the key firmly pressed inward or frontward while trying to start. 1- If the engine starts: energetically jiggle the ignition key back and forth while the engine is running. 2- If the engine stalls at any time while doing this, then you may have a defective ignition switch. 2.5- Remove the Ignition key from the ignition. 3- Remove the four screws from underneath the steering column cover. 4- Hold the lower half of the cover with both hands and pull it apart from the upper half. You might have to use some force to overcome the locking tabs, you might have to tilt the steering wheel up or down to remove the covers. 5- Insert the ignition key back into the key cylinder (ignition switch) 6- Turn the key to the on position (don’t start the engine) 7- Move the key in and outward while observing the opposite side of the key cylinder 8- If the opposite end of the key cylinder moves even a little, while moving the key; then the wiring side of the ignition switch has popped out of the key cylinder and needs to be secured back into place. (You don’t have to replace the key cylinder) 9- Press the wiring end of the key cylinder inward and tie it down firmly with a strong nylon zip tie. 10- This should take care of the problem. 10.5- Remove the ignition key. 11- Reinstall the removed parts.
Don’t use a rubber band to tie down the loose ignition part; it will break-off when the ignition switch gets hot.