B Body Mopar B Body Mopar forum

360 engine fires up but wont turn off!

440brew
11-09-2008, 08:58 PM
First I am sorry for asking an a-body question but, this situation could be possible on any mopar regardless of engine size or body type. So here goes:

My 68 Barracuda fires right up but turning the key to the off position does not shut it down! What is the deal?

I have checked all the connection to the ignition and they seem fine...

Any ideas?

69 Runner
11-09-2008, 10:26 PM
My guess is the ignition switch itself is bad. If you have a spare it's an easy check. just unplug one, plug in the other, and see what happens. Problem solved? Problem solved!

5wndwcpe
11-10-2008, 07:06 PM
Do you, by chance, have an MSD box?

440brew
11-10-2008, 08:40 PM
Do you, by chance, have an MSD box?

No I do not!

pless21
11-10-2008, 11:05 PM
i had the same problem on my 74 Charger. i replaced the ignition switch and that did not help. I changed the starter relay switch and that fixed it.

5wndwcpe
11-11-2008, 05:22 PM
No I do not!


Okay, okay, don't get your panties in a bunch :edgy:

What kind of ignition do you have >

440brew
11-12-2008, 02:26 PM
Okay, okay, don't get your panties in a bunch :edgy:

What kind of ignition do you have >

Ha Ha Ha... sorry... I have the mopar style electronic ingnition with the electronic control unit and such....

69 Runner
11-12-2008, 04:58 PM
I take it you don't have a spare switch to test with

440brew
11-12-2008, 10:22 PM
I take it you don't have a spare switch to test with


no i do not but i am sure I can borrow one from a buddy.

I also tried to replace the starter relay as mentioned above, but it did not help.

440brew
12-09-2008, 09:49 AM
no i do not but i am sure I can borrow one from a buddy.

I also tried to replace the starter relay as mentioned above, but it did not help.



Tried a new ignition switch but no dice!

5wndwcpe
12-09-2008, 05:19 PM
Try running it with the alternator disconnected. It sounds to me like the ignition circuit is being backfed.

69 Runner
12-09-2008, 05:22 PM
Yeah. Something is shorted somewhere. I'm guessing with the ignition off and the motor NOT running you'll still see voltage in the ignition circuit