Jump to content
SAU Community

4Wd Light On

liammph-uk

By liammph-uk,
in Four Door Family & Wagoneers

 Share

Recommended Posts

liammph-uk Contributor

liammph-uk

Posted
Posted

Just had the car remapped (drives so much better now) but the 4wd light has come on and we can't work out why. As far as I know the 4wd is controlled by a separate ecu, at least it is in the Skyline, so I was presuming it's still the case in the Stagea? This is on a series 1 rs4 that's had a manual gearbox conversion. Not had a problem with the 4wd system before, any help would be appreciated.

Link to comment
https://www.sau.com.au/forums/topic/435505-4wd-light-on/
Share on other sites
liammph-uk Contributor

liammph-uk

Posted
  • Author
Posted

No gone for the Link G4 ecu.Don't think anything that was done would have affected the throttle position sensor, how would that affect the 4wd?

Yeah could be coincidence, but the light came on as soon as the new ecu was plugged in.

Link to comment
https://www.sau.com.au/forums/topic/435505-4wd-light-on/#findComment-7121608
Share on other sites
MikeH Contributor

MikeH

Posted
Posted

I have the same problem. Well sort of anyway.

My 4wd light comes on probably 8/10 times I drive the car. Sometimes straight away, some times not at all... I have the rs4s with a 'mines' ecu.

I am putting a new set of wheels on this Friday and getting a wheel alignment so if that doesn't fix it (doubt it will) then further investigation is needed.

I am keen to see if there is known problems that cause this as well.

Link to comment
https://www.sau.com.au/forums/topic/435505-4wd-light-on/#findComment-7125149
Share on other sites
mely1200 Explorer

mely1200

Posted
Posted

Hey mate,

Was it tuned on a 2wd dyno? Might have clutch pack problem if you did...

Can you jack it up so all 4 wheels are off the ground? If you can, spin the rear wheels. If the front wheels turn as you do, you still have pressure in the ATTESA system. If not, you might be in strife. Best case, the clutches took a beating but are ok and you just need to get some more fluid in the system, check the reservoir in the drivers side rear.

I have the R33, R34 GTR service manual if you can get access to a consult box; it will tell you whats going on...

good luck, pm me if you need anything.

m

Link to comment
https://www.sau.com.au/forums/topic/435505-4wd-light-on/#findComment-7127128
Share on other sites
  • 3 weeks later...
XKLABA Grand Master

XKLABA

Posted
Posted

Ayvon, if your car is the R33 GTR, it's pin 56

http://www.skyline-owners-club.com/forums/showthread.php?t=22456

Link/ViPec and some other computers "share" the TPS signal from the TPS sensor instead of relying it which inturn lowers the voltage at the various control units, the 34 feels it the most because of the MFD, this is an issue I'm having at the moment and the cure, for me atleast, is a buffer to up the voltages back to correct levels

Link to comment
https://www.sau.com.au/forums/topic/435505-4wd-light-on/#findComment-7150916
Share on other sites
Abe2 Experienced

Abe2

Posted
Posted

stagea rs4s s2 run the 25neo
i have replaced factory ecu now im having intermittent 4wd issues im trying to figure out what pinout / wire was suplying the 4wd ecu with tps signal
at this point i was going to t it off straight from tps

Link to comment
https://www.sau.com.au/forums/topic/435505-4wd-light-on/#findComment-7151464
Share on other sites
  • 2 weeks later...
XKLABA Grand Master

XKLABA

Posted
Posted

MFD, Multi Function Display, R34 GTR

where are located ?, I have a guy making me a voltage chaser, basically it takes a high imp input and puts out a low imp out put so it can supply the right signal voltage for more things to use, on mine I'm going to cut it in to the wire leaving the ecu, he made me a PWM switching unit for my fuel pump and it works perfectly

Link to comment
https://www.sau.com.au/forums/topic/435505-4wd-light-on/#findComment-7162092
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • 25zenki
      S1 rb25/s14 starting problem

      By 25zenki · Posted

      This car has run before on this z32 ecu can get the part number for you, I have tried with no AFM it didn’t change anything, I compression tested today 140-150 across all 6 cylinders, also set fuel pressure to 43psi. The only weird thing was cylinder 1 plug was black and fouled other 5 cylinders were just wet with fuel. Spun cas by hand and confirmed injectors are clicking 
    • MBS206
      new 1.5 LSD issues/concerns

      By MBS206 · Posted

      Since you came here to ask for help, have you thought about answering our questions, that might help us lead you to why it was skipping, or have you given up on getting advice?
    • GTSBoy
      new 1.5 LSD issues/concerns

      By GTSBoy · Posted

      A 1.5 way is a 2 way. It is just a 2 way with a less aggressive ramp on overrun.
    • GTSBoy
      Boost cut after swap(RB25DET NEO) R34

      By GTSBoy · Posted

      The ABS and/or TCS being missing/broken will not cause the engine to misbehave. It just casues CEL to come on and annoy you. The CEL is useless if it is always on, so you have to do the things you have to do to get rid of it, so it can be useful. Being a Stag ECU, then yes, it will not expect TCS to be present. But it will expect ABS to be present and working. You will need to either make the ABS CU talk to the ECU (don't ask me what that will take on an NA R34), and make sure the hardware is working....or, you just need to blank it out in Nistune. Do not persist with the stock ECU. You will just have problems. Gte it Nistuned. Start from there. DO YOU HAVE A BOOST SENSOR? The ECU's boost sensor that it. It is connected to the loom at the rear of the coil cover. Usually rides on the firewall on an R34, but is usually bolted down to a bracket along with all the other crap at the back of the coil cover when a Neo is dropped into another car. If you do not have it, the ECU will shit the bed. So, do you have one?
    • Kapr
      Boost cut after swap(RB25DET NEO) R34

      By Kapr · Posted

      So sadly the fuel pump etc was not it. The pump and filter is new and it is still cutting around 4000 rpm. A read something about ABS/TCS (engine is from stagea and ECU too so no TCS) and i dont know for 100% that my car has ABS. It has ABS "cube" in engine bay but i dont think it works(or at least from my braking experience). Can be something like that?  I will be driving the car next week to Nistune tuner to properly see what is wrong...  
×
×
  • Create New...