Ignition switch falls back to OFF position after letting key go, and engine shuts off.
The problem is sporadic. It happens now and than. I turn on the ignition switch and when I leave it go, the engine shuts off. If I hold the key in mid position between off and start it continues to run. If I let go, it will shut off. If I go too far with the key, the starter begins to grind against the flywheel. After driving for a bit while holding the key in that position the problem corrects itself, and I can let go of the key and it will stay in it's proper position. Other times I can go out and start it and the problem does not occur.
I think I may have a bad switch, but am not sure.
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key switch could be bad.next time with the car running,keep pressure on key as if you were trying to pull it out and turn to the off position slowly, this will let you know if it is going past the lock position when you are shutting car off.The keys should come out just as you come to the off position, if they come out any earlier, the switch is bad.
If the ignition switch will not turn off, one of the most common causes is the pin on the upper ignition actuator gets loose and fall out of position. This makes it so that the Ignition will turn on and the engine will start, but it will not turn off all the way. If this is the case, the steering column will have to be removed and completely disassembled to replace the upper actuator. I do not recommend trying to fix this yourself unless you have some very good mechanical skills and are willing to purchace some special-service tools.
Another possible (common) cause of your problem may be that the "wedge" in the ignition lock cylinder that is supposed to prevent the key from being removed while the ignition is on could be worn out or broken. If this is the case, you may have turned the key back too far into the accessory position and removed the key. (It SHOULD only come out in the OFF position) You can check to see if this is the case by turning the ignition switch on and see if the key comes out. If it does, then only the lock cylinder would need to be replaced to correct this condition (Not very hard at all).
Check to see if either of these scenarios fit your circumstances and get back to me.
Pull the 60amp fuse in the fuse box near the battery. You'll find it. That will shut off the motor. Remove the neg ground on the battery to shut off the rest of the car and save the battery,
It sounds like the ignition lock actuator. It goes from the ignition key switch to the Yellowish ignition switch box, under the dash on the column. It pushes the ignition switch to start and pulls it back to stop and lock. If you remove the 2 hex screws on the yellowish ignition switch and let it hang down, you will see a rod sticking out of the top. It's a slider. Push the slider toward the engine and it starts. Toward the drivers seat, and it shuts off the car. Check this out. http://en.allexperts.com/q/Steering-Column-Repair-2047/2009/7/95-Thunderbird-1.htm
locate your fusible link wires leading from your battery the and the electrical harness, you may not be getting the accessory power to your key switch and this is supplied via this fuse wire located near the battery
It could be either one of those. If your ignition key has the little chip(black plastic with metal in the middle) on it between the teeth and handle it could be the VAT security module or the key itself. Does this happen sporadically or is this the first time that has happened?
sound like the tumbler is falling out, when you open the steering column there should be a hole where a small but solid object can go in.. this release the tumbler but only when the key it turn at a certain position you will feel the pin in the hole go inwards then you can slide it out...it could be defective or just need to place back properly..hope this help..
Most scanners will only give you a code for 1995 and up. But it seems that it could be a Crankshaft Position Sensor.Try disconnecting the negative battery cable and let it sit for a few minutes. then reconnecting it back. if not you can go to Autozone and they will scan your car with a very expensive scanner and give you a code. they usually do it for free. I think it's either the CPS or some other densor such as the MAP, MAF . You can only know if the engine is scanned.