[bobcowan]

I'm using shielded cable supplied by DIY. I followed their instructions on routing and wiring. The voltage seems to be pretty steady at 4.93v as supplied by the ECU; minimum is 4.75v. Air gap is 0.75mm. After mulling it over, here's my plan:

- check the harness, and make it didn't get damaged during install, or is lying on top of the starter motor, etc.
- play with the air gap on the hall sensor. I'll keep increasing it by 0.25mm until the noise goes away, and then see if I lose any signal.
- wire the sensor directly to 12v switched power.

Yes, I'm stubborn. Before I dump it completely, I want to assure myself that I'v tried everything I can think of.