86 Roadster - Ck engine light - no codes???

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Sep 28, 2010 | 08:30 AM

#21

Lemme

Drifting

Joined: Nov 2009

Posts: 1,341

Likes: 2

From: Perth Western Australia

St. Jude Donor '10

Quote:

Originally Posted by pmihaltian

Got a better ground and tested positive for 12v into the distributor. So, it looks like the problem IS in the distributor and you guys are right - coil or ignition module. Tomorrow I'll dig into the distributor and check out the ignition module which is the prime suspect now.

With an ohmmeter you can check the coil continuity and resistance. The coil should basically be zero ohms.

Did you check for a pulse while cranking?

Sep 28, 2010 | 01:50 PM

#22

pmihaltian

Thread Starter

Slingshot

Joined: Dec 2001

Posts: 3,817

Likes: 24

From: Charlotte NC

Quote:

Originally Posted by Lemme

With an ohmmeter you can check the coil continuity and resistance. The coil should basically be zero ohms.

Did you check for a pulse while cranking?

Tried to get the OEM ICM tested at NAPA, Advanced Auto & GM Dealer, all to no avail. The Advanced guy said that they could test it but he did not know how.

I also ran the tests on both the coil and the pick-up coil ring identified above. Both of these components passed. Finally, I observed the rotor while cranking the engine to assure that I did not have a stripped distributor gear - worked fine. Soooooo, looks like its the ICM.

Going to order the Accel Ignition Control Module which they claim is designed specifically to take the addtional voltage their HP coil puts out.

More later....