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JSeery · 10-24-2020, 10:06 AM

Think this is because (at least to me) the original post was not clear about the issue. I was under the assumption that the starter was not turning over correctly when hot. Seems the issue was more that the engine was not firing when the vehicle was hot. Now, they are somewhat related, when the starter is cranking it is pulling the voltage available to the coil, via the ballast resistor, down. If the starter is pulling more current when the engine is hot, then even less voltage is available to the coil. Add in a bad ballast resistor and that is how they get related to a no-start condition.

On some later 12v vehicles this was addressed with the starter solenoids that use a ballast resistor by-pass whenever the starter in engaged.

10-24-2020, 10:06 AM	#19
JSeery Member Emeritus Join Date: Nov 2012 Location: Wichita KS Posts: 16,132	Re: '41 won't crank when hot Think this is because (at least to me) the original post was not clear about the issue. I was under the assumption that the starter was not turning over correctly when hot. Seems the issue was more that the engine was not firing when the vehicle was hot. Now, they are somewhat related, when the starter is cranking it is pulling the voltage available to the coil, via the ballast resistor, down. If the starter is pulling more current when the engine is hot, then even less voltage is available to the coil. Add in a bad ballast resistor and that is how they get related to a no-start condition. On some later 12v vehicles this was addressed with the starter solenoids that use a ballast resistor by-pass whenever the starter in engaged.