Requirements For Rb25Neo Vct To Activate?

[The_MuffinMan25]

I have 1 log recorded of my VCT actually working on my car. Otherwise it never does. I have no speed signal to my ECU just the tach.

thru nistune I set the minumum vtc enable speed to 0 so should be fine.

I didnt realize the ecu grounded the signal for the VCT to operate when I first wired it up. I had wired the brown wire to a ground assuming the ecu provided a 5v or 12v signal to the vct plug.

Infact the only run I have with the variable timing logged working is with it hooked up the incorrect way.

Once I realized the brown wire was a 12v and not a ground I changed the wiring but this made no difference.

I can hear the solenoid click if i rev up the car.

Is there a way to test if the solenoid is bad? I had 1 die on me [oil seeped from inside the solenoid into the plug]

The log I have saved with the vct working the timing will drop to 19° timing at full boost and be running flawlessly

without it working it goes to ~23°

Thanks For ANY input

Tim

[KiwiRS4T]

I guess you could wind the solenoid out and ground the wire and see if it moves.

If you set the enable speed to 0 then surely it won't change? What is the disengage speed set at?

Why do you not have a speed signal to your ecu?