Q45 AFM Problem

[jnr32r]

I was trying to install the Q45 the other day but was unsuccesful.

Im still a little confused with the wires for the Earth as the RB20 AFM has a common Ground and a Signal Ground but the Q45 only has a common Ground.

So im unsure which one to connect. I tried both and the common Ground, but didnt actually try the Signal Ground. Couldnt get car started.

On the PFC tho i was getting a 500mV reading but it didnt change much when crancked. I had it set on VH41 for the AIRFLOW setting too, just incase somone thinks im that dumb...

Q45 AFM wiring:

AIR FLOW ======>

1 2 3

12V - Signal - Earth

RB20 AFM wiring :

AIR FLOW ======>

1 2 3 4 5

Blank - Air Signal - Power Ground - Signal Ground - 12V

Also the wiring on my RB20 AFM is somewhat strange as there is 2 cables that are inside a light brown cable that is not connected to anything, it seems to be there just to insulate from a magnetic field or something like that.

I got some pics that i couldnt upload if anyone can help.

Im even thinking the AFM might not be working properly, but how could i test for that tho??

[BigDatto]

I did a Z32 AFM into ECR33 recently using a VL commonwhore afm harness. Now I know that's not what you've got, but this may help.

[jnr32r]

I actually got it going now, turns out that the order posted here on the forums is all wrong.

For the Q45 the order is actually SIGNAL - GND - 12V (Flow ==>)

After a lot of playing around with a multimeter we figured it out.

But now i got a bit of a problem cos when you rev past say 2K rpm and let go of the accelerator it turns off or it revs down to 200rpm and then up and down until it turns off.

Its only at idle though, when driving around its fine.????????

Still gotta get the PFC tuned but im waiting to get injectors before i take it.