Car doesnt turn off (69 mustang)
 

Hello there everyone I'm a new member and still pretty new to working on my car but i have enjoyed it very much. I have done only a few minor things (changed intake,carb,coil,spark plug wires,repainted motor,new shock tower and upgraded the front suspension) but enjoyed doing it so its sparked my interest to work on my car even more (69 mustang) But heres my problem

Recently i had my old shock tower removed and installed a new one in that process the motor was removed for a while. After reinstalling everything it was running great but one day when i got home i wanted to turn off my car and it wouldn't shut off. Ive asked a few people what they though it was and some have mentioned it might be the starter solenoid or maybe something to do with the neutral switch system ( i didn't understand this too great) i think its a small electronic system that goes in the transmission hmm im a bet lost as i mentioned before I'm still pretty new to this you guys have any ideals of what it could be? Thanks for any info:)

your key is not shutting off the switched 12v systems including current to the coil. I'd try and find the short starting from there. A volt-ohm-meter is a good investment. You can find them as cheap as 6-7 bucks.

great thank you i appriciate the help and ill look into the volt-ohm-meter

doesnt that little solenoid on the strut tower have something to do with the starting system? if so that could be the problem... i dont know.

but do what r3d said...thats the last known power source so find the wire that shuts the car down and do a OHMs check on the wire. when doing ohms checks you have to isolate the wire so disconnect both ends and if the wire is good you will here a BEEP.


get a good wire diagram of the ignition system and try to trace it. i never worked on a classic car but i troubleshoot electrical systems for a living.

If it is still running points style ignition dizz sounds like you need a ballast resistor wire inline with the coil.

Shawn

Thanks everyone for the tips!

I would think that the ignition switch has a problem. I would need more info on the problem.
PS: My first car was a 70 Stang. 38 years ago....