1967 that will not shut off!!

tlindsey18 · Apr 30, 2010

Hey to all, first time to Stangnet, hope to find a lot of answers and hopefully can help some. My current issue is I started my Stang for the first time yesterday after a lot of work and it will not shut off by key. Some history....when I got it, it would not start with the key, i ran a new wire (Bue/red) from switch to solenoid bypassing NSS, fuse and plug in harness and it worked. I have replaced the solenoid and the ignition switch both, still no turn off. All the wires look fine behind switch. Any ideas???

Tim65GT · Apr 30, 2010

What ignition do you have? Stock points & coil? Check the wire from the I terminal on the solenoid. It ties into the coil Pos circuit pink resistor wire and should give full 12v to the coil, but ONLY when cranking.

tlindsey18 · Apr 30, 2010

Pertronix ignition and stock coil

j69302 · Apr 30, 2010

my first guess is you have a short or incorrect wiring which is bypassing the ignition switch thus the ignition is always staying on.

i ran a new wire (Bue/red) from switch to solenoid bypassing NSS, fuse and plug in harness and it worked

sounds like you wire you ran is connected to the switch somehow to create a always on condition.

You said when you irst got it that the car didnt start by key. Did it crank at all?

If it did not crank then I would look at the NSS not closing the circuit. You can unplug the this in the engine compartment and just run a wire to bypass the switch without going to the solenoid. if the 67 is the same as the 69s, then 1 pair of wires is the backup light, the other is the NSS.

I would removed the wire you added, bypass the NSS the way I suggested, then try to start and shut it off.

When I went from auto to manual in my 69, I just cut the 2 wires going to the NSS, put a connector on the end of them and shorted it to itself.

JonK · May 1, 2010

I replaced my solenoid once with a new one and it was defective, kept the motor cranking and would not stop. Might try another solenoid but if it happened with your old one I'd look at those bypass wires you ran.
Here's the schematic for '67:
Index of /~djhamma/wiring/1967
Jon

tlindsey18 · May 1, 2010

I re-ran the wire that I ran to bypass everything (put it back the way it should have been to begin with) the red/blue wire and still did not change anything. I run a jumper through the NSS and it did not change anything......

j69302 · May 1, 2010

after you removed your wire, is it not cranking or just not starting?

are you sure you jumped the NSS and not the backup lights?

Tim65GT · May 2, 2010

My current issue is I started my Stang for the first time yesterday after a lot of work and it will not shut off by key.

What type of work? Do you have an electric fan now? What type of accessories did you add? Try pulling any relays if you added any. You may be getting voltage feedback to the ignition circuit even after shutting off the ignition switch.

tlindsey18 · May 2, 2010

It starts fin. It will not shut off! I jumped both places on the NSS and neither had an effect on shutting the car down. Check this out, while the car is running and the key is in the off position if I pull the harness on the voltage regulator off, it dies. Should it?

Tim65GT · May 2, 2010

Possibly a wire or two are in the wrong position on the voltage regulator plug.

Maybe this diagram will help

tlindsey18 · May 2, 2010

If I leave the VR unplugged, the car starts and turns off normally.....???

Tim65GT · May 2, 2010

tlindsey18:
If I leave the VR unplugged, the car starts and turns off normally.....???

But it probably isn't charging. Trace the wiring from the VR plug and ensure all is correct.

tlindsey18 · May 2, 2010

I have a dozen times and it all seems right......the only thing unique and not sure if this matters is the ignition wire (green/red) was broken off from the VR plug...thought I had found the problem...NOPE, so I ran that wire directly to the prong on the VR instead of through the plug...would that matter?

1967 that will not shut off!!

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