N/A 4AGE 16V in AE86 - help needed, trying to "VEMS it"

[uzelac]

Will try, thanks.

btw ive managed to connect warning light to one of injector outputs, and it works as a shiftlight also, so thats covered

[lost]

I use HAL sensor, taken together with 60+2 wheel from stock Alfa Romeo 164, 3.0 V6 12V engine. It should be possible to make it work 100%.
Falling should be OK for HAL with 60+2. Not sure what mixed wires mean ?

Do you thing filtering can make some difference ?
Mount for sensor is really solid, but i will check it.

That sensor from that engine is VR not hall....

[uzelac]

? Are you sure?  I'm not

It looks like this:



has three wires and so far worked ok, sometimes perfect, sometimes with issues, seted up as hal sensor .

[lost]

from alfa 75 or 164 12v, if its 164 12v then its a VR, yes im sure 

Third wire is just shield

[mattias]

In the picture is a classic VR sensor.  You will be able to measure 100-1000 Ohms between two of the pins, the third pin will have no contact with the other two as it is the shield.

If it had been a Hall sensor you would have very larger or infinite resistance between all pins.

In addition, on the VR sensor you can easily measure the voltage swing going to neg/pos with a simple multimeter when you pass something made of steel past it (not stainless = not magnetic).

You are aware that the trigger input requires modification to accept each type? It will not work to use Hall sensor on a "type VR" input (no zero crossing).

[lost]

That picture is from alfa 164 v6 12v manual, mine is VR and board is configured for VR.

Maybe he has something else?
I have 3 alfa v6 engines and they all have VR sensor.

[mattias]

I was talking about uzelacs picture, your's is of course VR as it should be.

It should be easy to figure out what uzelac has, like I mentioned about measuring it up.

[uzelac]

Than, VR it is .

Will configure it as rising and see how it goes.

Btw. trackday went fine, no issues, everything worked ok in mine two 25minute sessions. With sensor on falling!
Even though, very satisfied

[uzelac]

If someone is interested how it sounds(mostly)/looks:

http://www.youtube.com/watch?v=H8OUglwsrl4

[irishtwincam]

Hey Dude, Usually run Phatbobs diode setup to get RPM working. Serach the site and youll find the schematic. Im sure vems can drive it but never done it.

[uzelac]

Will try that also

I took the cluster out of car, will try to figure what it needs now with some electronic testing equipment available at friends work.

[DANLOLASDAD]

ig- clearly marked on back of cluster if your only trying to get the rpm working the diode trick works fine done it a million times :-)

[uzelac]

Diode from coil ?
Will it work on COP setup configured as wasted. Each cylinder has it's own coil on plug and is fired twice in a 4-stroke cycle.

[rob@vems.co.uk]

Wasted spark COP then?  In which case connect one diode to cyl 3 the other to cyl 4, connect the two to the cathode (-) striped end of an 18V Zener and you'll have the RPM signal you need.

[uzelac]

Should this work:

2x DIODE 300V 1A - SF15 GLX
   (300V 1A UFM1.25V/1A IFM30A IR5uA 35nS, S)
1x DIODE ZENER 18V 1.3W - 1N4746/BZX85C18 MBR
   (18V 1.3W 5%)

Diodes connected to COP 3 & 4 ground, other end wired together to cathode of zener and into the tachometer ?

Thanks
p.s. extremely sorry for being such a noob.