Hello again my 79 is running great but at idle and only running for about 15-20 mins the truck dies like someone turned off the ign,sometimes it starts right back up and sometimes not. Its losing spark its electronic ign with the box on the drivers side wheel well, but my question is even only running in the driveway after 15-20 mins the dist coil is blazing hot is this normal? And will it cause it to just die? This just happened to me I have an extra coil and ign module but where to start first?
Sounds like either the coil is bad or the ignition resistor (if it uses one) has somehow been bypassed. An overheated coil will stop working, and a coil with a shorted winding will overheat.
Module. It was a common problem when the cars were still new. Customer would call and say "Car quit running, it is at XXXX." I would go down a little later, and it would start right up! I still carry a spare module in my 76 F150.
module without doubt that year whether Lincoln or ford was notorius for your car. start w/this before you replace the other
The coil should never be hotter than what it is bolted to unless you just stopped from a high RPM run.
?? This sounds wrong to me; with the ignition 'off' there should be no voltage to either the coil or the duraspark module. Maybe you have one of those perpetual energy coils. Almost has to be either the dura box or the coil -- I'd change the Duraspark first.
All it did was sit in the driveway for about 15-20 min at idle the die the coil is bolted at the front of the motor suspended above the intake so not even making contact with the intake.And was blazing hot.
So far so good bought a new ign module replaced the coil running and running and the coil is much cooler, I dident see a resistor anywhere so I don't think it has it but its running well.
Just to let you know, there is a resistor in between the ignition switch and the coil. It's a piece of resistance wire about 5 foot long folded up inside the dash wire harness between the switch and the connector on the firewall for the engine stub harness. BB probably remembers what numbers you should look for if you are checking to see if it still retains it's correct amount of resistance. Reguardless, it's highly likely that infamous Dura-Spark box was your culprit all along. I carry a spare.
