Testing coils on a coil over plug system?

[art leong]

Originally Posted by Adger Smith

Art,
Getting worse with heat and better when cool.... I still think Coil Temp affect has to be something in the electical controls.. Coils or sensors that time the electrical cycles being bad. I Still think the 2 step circuits in your computer are not working correctly. I would talk to the guy that did that and try to get it deactivated...completely. Get it running as a foot brake set up and then go back to the 2 step.

First I deactivated it in the ecu, then I removed the wiring from it.
I'm trying to get it back to running right without the 2 step. I ran fine before. I had it idling at 1000 rpms, drop it in gear and hold 900 rpms. When that comes back. Then I'll tackle the 2 step.

Originally Posted by buzzinhalfdozen

Art, the LS1 coil pinout is A= ground, B=low reference to PCM, C=coil control PCM, D=Ign power or B+ The low reference on terminal B is the PCM ground for the coil. Hope this helps. BTW you stated that this all seemed to start after using the launch funtion in the ECU, in what manner does your system limit RPM? does it do Ign. only, fuel only or a combination of these?

The launch control function can cut spark, fuel or timing. I was told for the N/A just to use the spark. It worked flawlessly in neutral but went ballistic when against the converter.