The madness of Mopar

Replacing the ECU won't do a thing

Trailbeast has a good idea.

A couple of things:

I'm finding more and more guys who have poor voltage through the bulkhead, so try this:

Key in run, engine OFF, check the voltage from the "dark blue" to the ballast compared to battery voltage

In other words put one probe on the battery plus post, the other probe on your dark blue. This will measure voltage drop between the two. 1/2 a volt is GENEROUS and it should be less

Also check your "ignition bypass" (ign2) circuit. Pull the coil wire and ground it. Put your meter on the coil plus and the battery plus. Crank the engine USING THE KEY You are checking for drop between the battery, harness, and coil during cranking. Here again, over 1/2 V is too much

Remove and push/pull the connectors on the ECU, the ballast, and dist. connector numerous times. This will "scrub" any corrosion off the contacts. Pay attention to how "tight or loose" the connections seem to be. If the above voltage tests are low, pull off the bulkhead connections, and inspect, clean, replace as necessary.



If all this gives up nothing, replace the pickup in the distributor and gap it carefully. Check the output of the pickup, put your meter into the two terminals of the dist. connector on low AC volts. When cranking the dist. should generate 1V AC