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73 starts but dies


2Forty

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I drove my 73 from my old house to new house. Replaced points with Pertronix ignition and flamethrower coil. 3 wire tach wasn't working and replaced that as well. Car starts but dies when key is released to run position. All fuses are good. After said problem I replaced solid state voltage regulater with stock voltage regulator with same results. Any ideas?

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There are two circuits that supply power to the coil +. One is active at Run, the other active at Start. Sounds like you're missing the Run power but have the Start power. Do you have a voltmeter or test light?

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Check for power at the coil + terminal when the key is at Run or On. If there's no power, that's why the engine dies when you release the key from Start. If so, find the wire that has power when the key is On and connect it to the appropriate terminal on the ballast resistor. The ballast will probably have a B for battery molded in to it on that terminal. Then check for power at coil + again to verify.

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  • 3 weeks later...

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