/ really loud like hole in muffler and running horrible #21
- Apr 30, 2014
- Logan, WV
- JD 650, Ventrac 4500Z AJ02248
I understand that you believe the signal wire is consistent on the terminal to the 1 coil, but coil not firing. How does the second terminal on that coil read? I am not sure but I "think" it should be constant 12V. By what you are saying, I think I would swap those connections to one of the other coils and see if that one fails or works. If that one works, your new coil may be a dud. OH; and be sure you did cross those two terminals on coil 1. That is about the limit of my understanding of the system.