Engine Won't Stop Running

[mason1958]

This is a first. I went for a long ride today about 1 hour when i got back home and went to switch the car off it would not stop running ? The only way i could stop it was to remove the coil wire. I have started it 8 times since and cut it back off using only the key in the switch.

Does anybody have any ideas ? I'm thinking maybe the starter relay got stuck but i would love to hear other opinions. Thanks for any and all feedback.

[Steven Harris]

Sounds like a switch issue. All the car needs to keep running is power to the coil. The other possibility is the starter relay.

If it was just a dirty contact in the switch and the Mach 1 has not been used much recently you may not see the problem again. Then again it could be problematic off and on.

At least it runs rather than leaving you stranded.

[mason1958]

Sounds like a switch issue. All the car needs to keep running is power to the coil. The other possibility is the starter relay.

If it was just a dirty contact in the switch and the Mach 1 has not been used much recently you may not see the problem again. Then again it could be problematic off and on.

At least it runs rather than leaving you stranded.

[68machowner]

steve is right, happend to me,replace the switch.
if the solenoid stuck you would know it,after letting go of the start switch it will keep the starter engaged.and all hell breaks loose

[Rare Pony]

steve is right, happend to me,replace the switch.
if the solenoid stuck you would know it,after letting go of the start switch it will keep the starter engaged.and all hell breaks loose

That happened to me once, the starter just kept going even though the engine started. Not sure why the engine would keep running when turned off unless it is the ignition switch down on the lower part of the steering column.

[1969jimmach]

Guys ignition power comes from solenoid.I suppose could be switch but doubt it. check out the wiring diagram.

[68machowner]

well, looking at my diagram, power dose come from the batt. side and goes to the center of switch, from there it goes to coil on start sole,but when switch is released it goes to the coil,which he had to unhook to break the circuit,It only happen once and to me that could be acceptable if its only a short walk home,but...... Thats why I said replace the switch,
the old grease in the switch could have caused the problem.Had my 92 Ford truck do that(recalled)and my truck went up in flames,
And buy a correct switch, I've seen cheap ones from handy dandy auto supply also burn up wiring harnesses.

[JTS71 Mach1]

Guys ignition power comes from solenoid.I suppose could be switch but doubt it. check out the wiring diagram.

You are correct, ignition power does come from the solenoid. But only during engine cranking. As soon as you release the key from the start position. Ignition power is then supplied by the ignition switch on the steering column. As soon as you release the key, the wire from the solenoid goes dead. JTS 71 Mach1

[1969jimmach]

Guys ignition power comes from solenoid.I suppose could be switch but doubt it. check out the wiring diagram.

You are correct, ignition power does come from the solenoid. But only during engine cranking. As soon as you release the key from the start position. Ignition power is then supplied by the ignition switch on the steering column. As soon as you release the key, the wire from the solenoid goes dead. JTS 71 Mach1

If the solenoid dont stick the power is released.I personally had this happen on several fords.But to be on the safe side I would change both cheap insurance for such a nice investment.