69small block

Is there anyway to test the module in HEI distibutor

TimAT

No start? A testlight from the TACH terminal (Tach disconnected) to ground and crank the engine. If the light flashes, the module and pickup coil are good.
GM had a module tester that heated the module and did a diagnostic thing- but it was a go-no go thing IIRC. Maybe parts stores have got them too.

69small block

here is what happend I was drivng and all the sudden car quite just like it shut it off pulled over checked some wiring all was good waited about 20min or tried to start and it started drove home no issues ckecked further for wireing issue did too ground found nothing so far car starts

Shark Racer

That sounds like a failing module to me. Gets hot, dies, cools down, off you go.

TimAT

That's why the GM tester heated the module. I'd also check the wires from the pickup coil- you're in there, it's easy to do, and might prevent a walk and a tow truck later.

68thumper

Same thing here...replace it with a GM module and be sure to use heat sink compound (grease).

69small block

Thans for input guys Its a new module for me and one in glove box

stpman

I had a pick up coil break on an HEI, when the dizzy advanced the car would quit and when the car quit and the dizzy retarded the car would start