GM Coil and Module Help Required

Yeah i didn't say it didn't spark, just that it wouldn't run, and i wasn't critesciing what you said, its totally relevant, so i didn't repeat it

Not sparking is also potentially a busted module and what you decsribe can also contribute to it being broken....

putting in a new one and breaking it again, is no good...

If a new one is purchased avoiding the problem that MIGHT have broken the last is financially sensible.

and you do get the odd one that is just faulty out of the box...

As bewy asserted check what he says and if it still a problem then the rest of us might have made a point that could help...

One other thing...the coil where it is, it is potentially beaming a magentic field right into the module

When the GM setup was first invented, with the coil in the cap directly above the rotor and the module they had difficulties. They discovered that, in that close proximity situation the coil orientation and the version of the module had to be set and choosen specifically to avoid interferance.

Using the coil connected the wrong way round or using a module for the pontiac version in a chevy set up resulted in problems. those problems were ironed out, but that doesn't mean you can't re create them by accident

i.e coil module and leads can interfere, however my set up is just a module hung off the side of the dizzy and the coil on the original mount with the wires trailing across and i have had no issues in 20 years. So trying it with the module and heat sink away from the coil might also work

Dave