Troubleshooting stumble at idle in gear

Good that you found it. I remember testing an ECU on a 77 dodge truck, it just wouldnt start. The tests seemed to check out, and I got fed up and threw an ignition box on it anyway and the thing started right up. Sometimes you have to just guess. Its good to troubleshoot though and it saves spending alot of $$$ . I hope it works out.

i wanted to throw this out there, where did you hear to use NGK plugs? I recall they were a import plug I have seen/ran them in Mitsubishi etc. Sometimes plugs have an effect. I run Autolites on my Small Blcok Mopars, and the factory ran champions. I see those plugs have a "split" in the center conductor...I know some will say it doesn't matter but some will say it does. The split fire plugs they had out 25 years ago for example didn't work very well in real applications.