Won't stay running

jsalty · #1 (**permalink**) 10-18-2009, 12:32 PM

All,
I have a 70' 2wd F100 with 302 automatic.

I had an issue with her shutting off and I figured it was flooding since I could smell loads of fuel. so I rebuild the carb and she fired right up ran smooth after adjustment. I take her for a ride and she cuts off still (must be electrical).

My wife and I both noticed that she will not 'start' until you let 'off' the key. I am tempted to run a wire from battery to toggle switch then from switch to coil and remove the 'I' wire from the solenoid. Will this work?

Any ideas of what the issue may be would be helpful.

checked for wire harness but they are $800.00, perhaps it would be best.

thanks in advance for advice.

GreenDinosaur · #2 (**permalink**) 10-25-2009, 09:11 PM

Where did you find a wiring harness for 800 bucks? that's too much. I bought a wiring kit for my truck and spent maybe 300 to wire it bumper to bumper. As for your ignition problem, You may have a bad coil. You could also have a bad ignition switch

mike

montana_highboy · #3 (**permalink**) 10-25-2009, 10:35 PM

Could be a faulty ignition switch.

jsalty · #4 (**permalink**) 10-26-2009, 09:53 PM

Thanks all.
I replaced the coil with one that does not need a resistor and ran a fused wire from Battery through a 50amp swith to the coil. also replaced the cap, rotor, points and condenser..Why not right?

it runs good now, I figured it was the ingition switch until I started chasing wiring then I became unsure..

Painless has a bumper to bumper wire harness with fuse box and 6 new switches for $700 and change... is this the type you found and where?

orich · #5 (**permalink**) 10-27-2009, 12:19 AM

Ford had troubles with there ign switches and this was the fault with them Some had round contact pins and some had flat blades. There's is a replacement pigtail if it has the round contacts. As I had the same starting troubles. The fix $19 switch and a $9 dollar pigtail.. To test your just hot wire . A jumper wire BATT. to coil+ side then use ign key to start, this bypasses the starting circuit, if starts and runs the check the plug pigtail going into the ign switch for over heating marks, tarnish and dark to black or wires that have gotten hot at the back side of the plug pigtail..
orich

GreenDinosaur · #6 (**permalink**) 10-27-2009, 04:41 PM

I got my wiring harness from carolina classics, It wasn't a painless brand.