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It sounds as if your Ignition switch is damaged, or, you have a bad relay that is sticking. To check the Ign. Switch, remove the covers on the steering column to gain access to the switch, unplug it and the engine should stop, when it's running. If it's just cranking, it should stop when you unplug the switch. If it does, then the switch is the problem. The relays you'll have to troubleshoot individually with a test light.
If only the starter continues to crank after shutting down, then you need to test the solenoid on the starter as well as the starter relays and the Ign. switch to determine which is causing the current to continue to the starter.
The fuel pump should turn on for about 3-5 seconds when you turn the ignition switch to on. If the engine starts the pump should still continue to run, if you do not start the vehicle the pump will shut off. It sounds like your fuel pump relay is stuck. Sometimes they will stick on even with the key off. The relay should be located in the relay box, under the hood on the drivers side on the inner fender well. You can try tapping on the relays with a end of a screwdriver, etc. See if that does anything for you. If that doesn;t help I will have to look up some info. Been a while since I had issues with that .
Some cars are designed to allow the fans to run even with the key off until the engine and radiator cool down. If it continues to run after 19-15 minutes you may have a sticking fan relay, usually located in the fuse box in the engine compartment, just replace it and it should take care of your problem
ok well this is where you might be incorrect... either you have a 12 volt wire bleeding scross or you have a bad ignition switch. the run wire off the ignition switch is the only thing that will keep it running unless you have a remote start then of course that could keep the engine running. you might want to start by making sure the ignition switch is beaking the signal to the PCM.
Hello, This is the same mechanic as you had earlier. The Ignition switch would still be a good place to look at. Just check to see what the Terminals on the switch are really doing when the Key is in different positions.
The turning of the Key initiates both the ECC and the ECA. The ECA will shut down first(times out) and then the ECC will shut down because it needs to sense the ECA is working. But on your car the fuelpump is continuing to run. This would mean it is getting continuous power.
Your ECC RELAY is probably toast and is continuing to supply power to your fuel pump. This would be a part that you would replace. Check your Ignition switch positions anyway.
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
I would check the ground for the fuel pump relay that operates the switch side of the relay.
You should have 2 12v inputs to the relay. When the relay gets 12v input, it closes the relay switch on the heavy current side that sends 12v to the fuel pump.
A relay is needed because you don't want heavy current going through the switch.
Also, most cars only run the fuel pump for 2 seconds when the key is turned on because you don't want the fuel pump running without the car running. If you listen closely at the fuel tank, you should hear the pump run for 2 seconds when you turn the key to "ON"
When the key is turned to "START", the fuel pump should run continuously.
The engine computer tells the fuel pump to shut off if the engine rpms are zero.
So, I would check the switch side of the relay. Power amd ground.