Hi all, thanks for all the suggestions on solving my stumble/pig rich running problems. After reading, thinking and pondering, and realizing that since my stumble started almost exactly at 2500 RPM, WOT or easing up to that, it had to be ignition related. So after new coil and module didn't solve the problem I knew it had to be power. So I jumpered wire M (third wire from left) on the CCCI harness directly to the alternator stud, took it for a spin and oh was I in for a suprise! Tires immediately broke loose and almost spun a donut turning out of my neighborhood. So much power and very very smooth! It should be included in the sticky instructions for 86/87 CCCI upgrade that it absolutely has to be hotwired because the 84/85 engine harness has a resistor that won't supply enought power for the 86/87 CCCI. Anyone who having stumble/bogging problems should try this when searching for a solution. I'll probably wire in a relay tomorrow so the CCCI isn't always hot (even though I don't think it'll be a big problem). Thanks Again!
WOT STUMBLE SOLVED!!!
- Thread starter holmesboy
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what year is you's where is the ccci harness is that the one the scan master hooks to any size wire
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Interesting. How did you find out there is a resistor?
How much voltage was at pin m before the hot wire?
RL
How much voltage was at pin m before the hot wire?
RL
Rafs-T-Type
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What does CCCI Stand for 
novaderrik
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What does CCCI Stand for
Computer Controlled Coil Ignition?
The resistor info is stated in the install instructions pdf for the caspers hotwire kit on their site I didnt actually verify the voltage before (will do today when I install the relay) but on another diagram that I saw from caspers it said 8.0 volts was all that is supplied on that wire.,
once i remove the screw will it just come off the module ??
i'm not following this, do i need to splice into that wire
Here's a few diagrams for anyone who wants to try this. The first is simplified version to test to see the difference it will make before adding a relay (although I don't see it being a problem to leave without the relay unless the CCCI will be damaged by always having this wire on. Other please chime in on this).
The second diagram is with the relay so the power from the alt to the CCCI will be off when the key is off. I used 12 gauge wiring and soldered all connections. Oh, the relay is a standard relay from any auto parts store, <$7. Hope this helps!
The second diagram is with the relay so the power from the alt to the CCCI will be off when the key is off. I used 12 gauge wiring and soldered all connections. Oh, the relay is a standard relay from any auto parts store, <$7. Hope this helps!
blackgn231
Money pit
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So your was running rich? Mine is doing the same thing but its a 87 GN and its running lean but drives ok then starts to stumble and you can get past it by giving it gas but its there after driving it a little pulled the pump thinking it was that .
Hotrodbuick
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It's under the coil packs where the spark plug wires go to. There is a big connector with a bolt that is 1/4" I believe. The wire he is talking about is third from the left labeled M
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