MembersPage/TSchoenacher (2021-05-29 10:33:14)

I am currently setting up a VEMS V3 for my 1970 Alfa Romeo 1750 GTAm replica.

I use an Alfa 75 2 litre twinspark naturally aspirated engine.

- stock 60-2 trigger wheel

- stock VR sensor

- running twin spark as wasted spark with two 2x2 coil packs

- Alpha/N

- VGS throttle body

Genboard ordered directly from vems.hu with VR as primary trigger and hall as secondary trigger (as i did not know which kind of sensor i would use).

Wiring loom made as shown in the schematics available from download section.

Problem:

Everything works fine except the VR sensor. Sensor measurement until EC-36 shows perfect signal with oscillograph.

No trigger signal in triggerlog, contacted Ferenc Kulin, he quickly checked my settings (looked OK), he will also check my wiring diagrams.

Possible fault: P259 chip (even if i do not use the outputs from this chip at all), maybe i blew it when testing the hall sensor and miswired something?

If wiring schematics is OK i will send in ECU for a check.

- 17.05.2021 - ECU sent to hungary for checking

ECU back, P259 changed, now I have Trigger signal and engine is firing and starting