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Rb25 - Z32 Nistune Ecu - Vtc Not Working :(

kubus

By kubus,
in Engines & Forced Induction

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Rolls Grand Master

Rolls

Posted
Posted

Does it need to make that clicking noise when revving on idle to ensure it is working?

If the solenoid isn't clicking, then it obviously isn't moving and hence it isn't working.

Isn't that fairly obvious lol?

  • 1 month later...
Torques Mentor

Torques

Posted
Posted

Hello there,

I have an RB25 with Z32ECU+Nistune.

The Z32ECU activates VCT by (engine)load, not RPM, however you can change this by

changing parameters in Nistune.

Look at what I (User: Torque)wrote here:

http://forum.nistune.com/viewtopic.php?f=8&t=2125

This is tried tested and proven...

However despite Z32 giving the VCT-Signal, I think VCT is not working on my car.

Judging from my Dyno, I lost about 100NM ar 3000rpm.

Also the car is like a slug at low RPM.

I will (tonite) test if my solenoid is working by applying GND to the selenoid itself.

How did you get on with the issue at your side?

DVS JEZ Grand Master

DVS JEZ

Posted
Posted

Torque's try disconnecting it and go for a drive, then power it up and go for a drive, see if there is a difference.

I read ur thread on nistune a while back. I am just about to tune my rb25 in r32 with z32 ecu but my car doesnt have a speedo so im not sure if i can get vtc to work

SargeRX8 Grand Master

SargeRX8

Posted
Posted (edited)

When I put my clutch it and just TOUCH my throttle and hold it, I can hear a click, in a gear, stationary. When I lift my foot off the throttle, it clicks again. RPM doesn't matter, even at 800rpm I can hear a click, when its in gear and clutched in the click when release the throttle. Is this the VCT thing? Just wondering because I have NFI what it is. Doesn't do it in neutral. Power FC.

Edited by SargeRX8
GTSBoy Grand Master

GTSBoy

Posted
Posted (edited)

I am just about to tune my rb25 in r32 with z32 ecu but my car doesnt have a speedo so im not sure if i can get vtc to work

Have you considered just getting an R32 speedo head and connecting it to a speedo drive cable (and gearbox obviously) and electrically to the ECU and then hiding it somewhere, so it does what it is supposed to do for the ECU?

You'd need to do the Navara speedo drive mod for the RB25 gearbox of course, but that's no biggie.

Edited by GTSBoy
RB25 SKYLINE Experienced

RB25 SKYLINE

Posted
Posted

Torque's try disconnecting it and go for a drive, then power it up and go for a drive, see if there is a difference.

I read ur thread on nistune a while back. I am just about to tune my rb25 in r32 with z32 ecu but my car doesnt have a speedo so im not sure if i can get vtc to work

this is how i tested mine and its very simple if u drive it and it is faulty u will notice a huge power difference between it being plug in and unplugged mine also was leaking oil out of the plug.

DVS JEZ Grand Master

DVS JEZ

Posted
Posted

Have you considered just getting an R32 speedo head and connecting it to a speedo drive cable (and gearbox obviously) and electrically to the ECU and then hiding it somewhere, so it does what it is supposed to do for the ECU?

You'd need to do the Navara speedo drive mod for the RB25 gearbox of course, but that's no biggie.

i ordered the navara speedo drive from nissan this morning, $65 retail part number is 32702 - 02G17

i havent checked to see if it requires a neutral switch yet.

Torques Mentor

Torques

Posted
Posted (edited)

You can, when you set up the minimum speed for activation to ZERO.

If you have questions let me know.

As for my VCT, I tested it yesterday by connecting a light bulb to the solenoid.

Sadly it worked ;)

Also I activated the solenoid manually (by applying a voltage to it)

(It clicked and then the valve train rattled a bit, also rpm went down)

I have to say that I have Poncams, and these might just work as if VCT was on most of the time.

(more overlap)

Anyhow, I will find out what's wrong.

Torque's try disconnecting it and go for a drive, then power it up and go for a drive, see if there is a difference.

I read ur thread on nistune a while back. I am just about to tune my rb25 in r32 with z32 ecu but my car doesnt have a speedo so im not sure if i can get vtc to work

Edited by Torques

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