edjrgt65

I have a 65 gt A code coupe stock 4V/289 and is totally restored,I have put a new battery,starter,selonoid,voltage regulator,ignition switch and today a new alternator and overnight it got a dead battery and when i charge the battery back up and hook the + positive post it turns the starter and the key is not even in the ignition and also i un hook the brown and the red wire off the selonoid (I & S) to keep from frying the selonoid when you boost or charge a old ford and i also pull the positve post off the battery and let it charge on the charger and i bought this car 10 yrs ago 100% restored so it looks like wiring harness was and still in good shape ? if any one have ever had this strange thing happen to them please share. been working around cars for 30 yrs i cant figure this one out.PLEASE HELP THANKS

rtintwo

Im a little bit confused with what you wrote so i will answer as best as i can.

Ok i will start with the crank without key. Disconnect the little wires from the solinoid and hook the battery back up. If it is still cranking then you have a bad solinoid. This is possible even with a new solinoid. If it doesnt crank with the little wires unhooked then you need to trace back to the ignition switch and shoot power into and out of it. Here is a link to a wiring diagram.

http://midlife66.com/wiring/66ignit.jpg

Next your new battery died over night? Did you leave a light on or do you think you have a drain on your battery?

ETA: Also tap the solinoid with a hammer and see if that causes it to stop cranking without a key, if it does stop then its a bad solinoid.

65vertable

i had this happen to me, ended up being the ignition switch, which was odd because it was new...

frdnut

I just had to replace my solonoid as it was doing the same thing(cranking without the key turned on)....You could do a simple test with a test light and see if you have constant power at the S terminal wire even with the key off.If so you have some wiring problems or bad ignition.

JMD

A solenoid can "weld closed" right now when trying to start a car with a weak battery.

IF the starter turns when the two small wires (I & S) are off the solenoid, then for sure the issue is with the solenoid.

If the starter does NOT turn with the small wires off, and the begins turning as you hook them up then the issue is not with the solenoid.

This will be a good place to start your troubleshooting.

(if the solenoid is indeed stuck closed, a good smack will often dislodge it)