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driving my 67. has Delco HEI distributor. it drove fine but died in a parking lot. replaced the 4 pin ignition module in the distributor and it fired so drove it home. shut off and would not restart. rebuilt the distributor with new pick up coil and ignition module. drove for several days then it died again. replaced the ignition module and it fired and drove it home.

what will cause ignition module to go bad. do i just need to put in new HEI distributor.

thanks

todd
 

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what voltage do you have on the power wire?? did you do away with the resistor wire?
also inside distributor cap the ground strap under the coil still there??
 

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I've seen plenty of sliced-in copper wire (to replace the original resistance wire) develop a bad connection. The old brass terminals don't accept solder very well. You may have an intermittant 12V connection at the IGN wire on the firewall bulkhead connector. Could be coincidental that changing the module makes it work. It could be that a heat cycle follwed by a zap of electricity when you fire it up the next time is really what's making it work...temporarily.

Next time it acts up, put a volt meter on the IGN power lead of the distributor. Disconnected it'll probably show 12V but when loaded by the distributor or a test lamp it may be dropping to zero volts.
 
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