Home › Forum › Ask A Member › 1988 Johnson 9.9 NO spark. › Reply To: 1988 Johnson 9.9 NO spark.
Well, the sensor is the only thing you have not replaced….The resistance reading should be steady, it is just a simple winding. That being said, I would try a different ohm meter just to be sure it is not a meter issue.
As for the stop switch, I think I read that you have replaced it already, correct? In any event, even though the switch passed the ohm meter test, that is no guarantee it is OK…Arcing can still occur even with good resistance tests.
In any event, I’m guessing that your erratic sensor resistance readings are probably the issue, but just check it again with another meter to be sure. Trying to set the sensor air gap without the alignment ring is tricky, because there are no laminations to line up with the machined surfaces on the mag plate. The conventional alignment ring for the universal mag plate systems works for the CD2 systems as well….