1992 Chevy Truck testing engnition module and coil

welcome to the forum, did you check the coil primary circuits? Pink wire is voltage, goes hot when you turn on the key. Use a testlite, is there voltage?

Engine cranking, the white wire should have a pulse on it. How long since a tune-up? Any codes?

voltage inthe pink wire , 11.75, white wires ,comming into coil and one going to eig. mod. at dist. both drop to 9 volts when cranking, but no pulsation to 0 that i can see.

Right now, it sounds like the ignition module or pick-up coil. I believe that was your thinking as well? Using a digital multimeter on the voltage setting may not show a pulse, some meters will average the reading between high and low. Probably if you took a reading on the pink wire, engine cranking, the voltage reading would be the same as the white wire.

installed a new ignetion module.. purrs like a kitten.
thank you.

Glad you it going your way. Thanks for the donation.