Quote:
Originally Posted by rudykazoo
I would suggest checking the terminal tension on the connectors that plug into the module. Unplug the connectors and check each one using a male spade connector to plug into each terminal. They should have some drag on them when you remove them. It could be that your modules never really failed. It just fixed itself temporarily when you plugged the new one in. Seen it many times!  |
The modules are very difficult to unplug so the connections seem tight, but checking them individually couldn't hurt. Both the under the cap harness and the pickup coil are brand new so the plugs should all be in great shape.
The only time I tried a new coil recently it ran worse, much worse. Still running the coil that was in the HEI when I got it from a friend off a junk engine. Other than the body of the distributor and the shaft, it is the only original part left. Cap, rotor, harness, pickup coil, weights, springs, bushings, external wiring, spark plug wires, vacuum advance and module are all new or newish. Ran fantastic for quite a while, problems just cropped up last year.
If it was frying modules due to starter feedback or fluctuating voltage, wouldn't that fry the modules at start up or soon thereafter? This only seems to happen when I am happily tooling down the street. Temps outside being hot or cold seem to make no difference (though I don't drive it in the winter).
I'll pull the cap off an examine the coil and it's connections when I get a chance, probably not until next week as it is hot and miserable out all this week.