Ok I upgraded to the newer style coil that mounts by the t-stat housing and I think I have issues. One coil was just bad and it wouldn't even let me go more than 1/4 throttle before it would cut out. The current one installed will allow for WOT and part throttle, but randomly it will cut out like it's losing spark, but so far this has only happened while cruising in 5th at random speeds but very low throttle. A select number of times, the car will just shut off completely with power to everything but the spark. If I jiggle the wires, unplug the coil and replug it back up, it will work again. This happens rarely but it still happens. I have checked all the wires going to the HEP, swapped the HEP, swapped plug wires and checked for any discontinuity with the wiring from the sub harness to the plug and everything is good.
I guess it could be the power module, but I think I've swapped that as well with the same results. I may do that tomorrow and drive the car for a bit to see what happens, but it has been doing this since I went to that style coil. Since the one was bad, could this one be going bad? Both came from a parts yard. Should I just go get a new one from the dealer or has anyone else had issues with these style coils before? I have NO idea what model cars these came off, not sure if one year was better than the other. Anyways, any suggestions would be appreciated.