Use the tooth logger and see if you're getting a tach signal from the Hall sensor when the engine is cranking. If not, you need to start there.
With power on, place the sensor over the missing tooth gap. Then pass a metal object across the face of the sensor. You should get a blip on the tooth logger. If you you do not, then there's something wrong with your sensor circuit.
If you do get a blip on the tooth logger, then the sensor and circuit is working, but it's not getting a good trigger.
- what voltage are you feeding to the VR sensor? Although the range may be 5-25v, it may perform better at a specific voltage. Mine performs poorly at 5v, but excellently at 12v.
- the air gap is pretty small. Especially if the sensor body is not perfectly aligned with the trigger wheel. Mine works best if you screw it in until it touches the tooth, and then back it off 1/2 turn.
Ford 427W Dart Block Stroker
-- Monster cam, 8 stack EFI, 600+ hp.
MS2/Extra pcb v3.57 - Built by DIY AT
Firmware MS2 3.2.1