ENGINE WONT SHUT OFF!!!!!!

[TAMBORAINC]

engine wont shut off.
key off, key out, battery disconnected still runs!!!
Ignition? Neutral sfety switch?

[basketcase0302]

Ignition

I would say ignition switch, it's gotta' get power to the coil to stay running.
Get it shut down by pulling the coil wire from the coil.
Then pull the ignition switch out of the dash to troubleshoot.

[TAMBORAINC]

Thank you,
how do I test the switch?

[basketcase0302]

A volt meter is the easiest way.
With the ignition switch in the off position, see if you have power to the + on the small wire on the ignition coil. If the ignition switch is off and you still have power there, your switch is probably shorted. They do fail from time to time.
Here's a very good wiring diagram of the ignition circuit on your truck:
http://www.fordification.com/tech/wirin ... gauges.jpg

[TAMBORAINC]

Thank you very much.
I'll give it a shot.

[TAMBORAINC]

Just a thought.
Could a worn neutral safety switch cause the same problem?

[70_F100]

Just a thought.
Could a worn neutral safety switch cause the same problem?

NO!!!

[cep62]

It could be a stuck starter solinoid / relay ,tap it with something.
What they can do is feed power to the coil by the start circut.

I've also had them keep cranking , even with key off .

[TAMBORAINC]

Checked wire on coil from ignition.
I have power to coil with key off and with key on.
Bad ignition switch?

[cep62]

Maybe, but try unplugging the small wire on the solenoid/relay and see if that helps.

[fordman]

unplug the ignition switch.

[TAMBORAINC]

Ok I have power to coil with key off or on.
When key in run position I get nothing unless I jiggle neutral safety switch.
then it just keeps cranking unless I disconnect positive terminal on battery, but engine stays running untill I dissconect coil wire.

[TAMBORAINC]

Also, new cap/rotor, plugs and wires, starter relay, coil, and battery
I have 3 wires coming from ignition through firewall
1 goes to coil
1 is ground
the 3rd is white i think that went the electric choke?
when key is in on position the white wire has pulsating power going through it, any thoughts.

[ximy]

I had a dream once that I couldn't shut off my engine and it was boiling over and then the radiator burst leaking and the engine compartment filled up with steaming hot water... and then I looked at the engine compartmetn and it was filled with water and I could still hear the motor running and burbling underneeth the water and it was steaming and bubbling... what should I do?

[TAMBORAINC]

What?