No spark in chevy

Say, you've got some pretty high-powered help here and I sure don't wanna nose in on your thread, but you say you have no fault codes.

What kind of a readout are you getting? No readout at all? A reading of two horizontal dashes? Are you even getting the code 12?

Allan

Don't sweat the trouble codes to find out why you have no spark. With the "set timing" connector pulled as I told you before the distributor will spark even with the 'puter "dead" or removed.

Or did I miss something?

They made quite a few variations in the electronic ignition as the years went by, and I'm not QUITE psychic enough to GUESS which setup you are working with!

Don't sweat the "Ohms" right now.

Both red wires share a common connection inside the coil. One brings 12-Volts into the coil from the ignition switch. The other takes 12-Volts FROM that connection down to the module in the distributor,

The white wires also connect to a common point. One goes to the module, along with the red wire.

The other goes to the tach, if used, and, I believe, the 'puter.

What you need to do is LEAVE THE CONNECTORS CONNECTED TO THE COIL AND MODULE.

Probe (pierce the insulation) on the white wire. (You can seal the hole with a dab of silicone sealant later.)

With the igntion switch "ON", the white wire MUST light a test light. As soon as you turn the key to "START", the test light probed into the white wire MUST flash as the module is firing the coil.

Check this, and post back. Maybe start a new thread, as this one is a couple of pages back.

Or email me.

bigcoulee@hotmail.com

If that's OK, you should have battery voltage on BOTH red wires at the coil. The WHITE wires at the coil should have battery voltage, too, which the module pulses (pulls down to ground) each time it is time for a spark.

If that checks out, pull the "set timing" connector apart (connector with single brown wire located under relay cover the RH of firewall OR above the passenger's shins, in some versions.

With the "set timing" connector disconnected, the 'puter is (more or less) out of the equation, and the spark is under the control of the module in the distributor.

Try these suggestions, and post back!