On an original or a replacement solinoid there are gererally two terminals on side that have much lighter gauge wires. Mine are snap or slip fit ends, like original but yours may be a nutted terminal.

Then this happens again, just quickly go under hood and remove the two small gauge wires fast as possible. If engine stops, then the solinoid looks to be the problem and replace it. A new solinoid is about $8 at local autoparts store, and they need replacing after a good solid 10-20 years in use.

If yanking the wires is not the problem, then it is at the key end, or maybe bum wiring.

Also opposite can happen. You engine will fire off while cranking, but then die upon releasing the key to normal. Usually the pink wire going to coil is bad somehow then.

Wm.

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Old Ford owner