Thanks for the input guys, all ideas are helpful. So far I have done a bit of fault isolation and I believe the hall effect sensor is bad. I found a post on another thread and it said to connect battery power to the ignition unit, run a jumper wire (I used a paperclip) between the black and the white wire and when removing the wire there should be a spark at the spark plug. There was, now its just a matter of isolating the problem to the sensor or the magnet. The magnet has not lost its magnetism, but I have not completely eliminated that as a possibility. I passed a different magnet over the sensor, several different ones as a matter of fact, and it still didnt work. I dont feel the magnet is the problem, but I suspect the sensor.
Does anyone know of a way to troubleshoot a sensor? I assume it has to have power applied to the sensor to get any kind of meter reading on the other lead.
Thanks, Denny