no start diagnosis

[cherokeechief79]

my sons 67 wouldnt start the other day.no crank at all after sitting a while.
we looked at it the other nite in the rain and it cranked with a screwdriver at the solenoid.
he turned the key and i put a test lite at the yellow wire and it lit.
is there anything obvious at this point?
cant be a bad connection at the starter if it cranks with a scredriver.
it may have a bad connection at the connector on the yellow wire(i think its yellow).
if i take a wire directly from the battery and touch the terminal on the solenoid where the key wire goes to it should crank right?

 

[halifaxhops]

See if the starter relay is good.

 

[cherokeechief79]

im thinking after doing some research that it must be the neutral safety switch.
it has power everywhere it needs but the switch supplies the ground for the trigger wire.

 

[halifaxhops]

Troubleshoot it before just changing parts not much to it.

 

[cherokeechief79]

ill just ground that lead and see if it starts.
if it does ill just make a new ground wire bypassing the nss and change it when it gets a little warmer.

 

[tonysrt]

If it is an automatic sometimes juggling the shifter will get it to crank. Whether floor shift or column may get it to start.

 

[cherokeechief79]

that was it...ran our own ground wire to the firewall for now.