Jump to content
SAU Community

My 32 Gtr Switches From 4Wd To Rwd On Its Own?

Concept Garage
 Share

Recommended Posts

Concept Garage Apprentice

Concept Garage

Posted
Posted

Hey guys,

As the topic states, my 89' R32 GTR is switching from 4wd to 2wd on its own whenever it feels like and it is starting to do it a little more frequently now. It will switch from 4 wheel to 2 wheel while im driving and will remain RWD for the whole time (regardless if i pull over or stop at aset of lights etc), the only time it returns to 4wd is once i've actually turned the car off.

Does anyone have any idea what may be the cause of this?

Im not too sure when the last time the attessa system was serviced- im thinkin maybe this may play a part.

Cheers,

Danny,

Sunkist Grand Master

Sunkist

Posted
Posted

Hey guys,

As the topic states, my 89' R32 GTR is switching from 4wd to 2wd on its own whenever it feels like and it is starting to do it a little more frequently now. It will switch from 4 wheel to 2 wheel while im driving and will remain RWD for the whole time (regardless if i pull over or stop at aset of lights etc), the only time it returns to 4wd is once i've actually turned the car off.

Does anyone have any idea what may be the cause of this?

Im not too sure when the last time the attessa system was serviced- im thinkin maybe this may play a part.

Cheers,

Danny,

i dont know if its the same, but im assuming very similar.

our stageas run an attezza much like the 34R's one of the guys had an air lock in the system and would constantly switch between 4wd and 2wd.. he bled the system and it fixed the issue..

cant remember if it was Jetwreck(Craig) or Ironpaw(Jethro)

Concept Garage Apprentice

Concept Garage

Posted
  • Author
Posted (edited)

i dont know if its the same, but im assuming very similar.

our stageas run an attezza much like the 34R's one of the guys had an air lock in the system and would constantly switch between 4wd and 2wd.. he bled the system and it fixed the issue..

cant remember if it was Jetwreck(Craig) or Ironpaw(Jethro)

Yeah thats what im thinking it is, i figured if it was an electrical issue it'd be constantly on or off and wouldnt be alternating- i just havent had to much experience with the attessa system itself so wanted to narrow it down before i start bleeding it etc.

If anyone else has any imput they can throw in it'd be muchly appreciated.

Edited by Concept Garage
Concept Garage Apprentice

Concept Garage

Posted
  • Author
Posted

Yeah had a look and the resevoir is full. The gearbox was changed recently in the car and i dont think the attessa system has ever been bled so there's probably a good chance an airpocket is in the system.

Does any know where i can find the correct way to bleed the system??

GTR_JOEY Grand Master

GTR_JOEY

Posted
Posted

To bleed it properl, fill the reservoir then find the bleed nipple for the attessa at the rear of the vehicle, crack that and let it gravity bleed untill there's a constant stream...

Next fill the reservoir back up then remove the kick panel on the drivers side, there's a plug in there that u need to disconnect to start the bleeding process ( can't remember what colour)

Next u will need 2 people

Jump under the car, get some one to turn the ignition then crack the nipple on the back of the gear box,

Allow the attessa pump to bleed the air out and tighten the nipple when there is a steady stream... This will make a mess!

Fill the attessa reservoir, connect ur plug and instal ur kick panel back in...

That's pretty much it, hope it helps

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

    • Duncan
      New fix for low tyre pressure from bmw

      By Duncan · Posted

      I had never actually looked into it, but aren't onboard compressors a thing in trucks?
    • sunsetR33
      Anyone have this problem with their temperature gauge?

      By sunsetR33 · Posted

      Read the ECU for fault codes or have someone else do it. A faulty coolant temperature sender is usually listed in ECUs. If the sensor itself is not busted it can also be a bad ground connection. Or in a really unlucky case, damaged wiring.
    • sunsetR33
      Anyone know this frontpipe?

      By sunsetR33 · Posted

      Can't be a Futjitsubo as those are made with a flex piece and Reimax is smaller in pipe diameter. If anything it is closest to a Mines pipe, but evidently it is not an actual Mines pipe.   Classic word humor
    • sunsetR33
      Anyone know this frontpipe?

      By sunsetR33 · Posted

      Alright I will try to not forget.   As GTSboy replied to you already, problem is mainly the mismatch between the actual exhaust part and the denomination in the papers. That basically just looks like tampering to a cop, if they were to check your car and notice. If it had been done right they would have clarified it to be a custom pipe and just given it a certain part number that you have to engrave or weld onto the pipe. I will definitely inquire on what to do. Changing the pipe wouldn't be my favorite solution as it costs a bunch of money and the cat was fitted with the front pipe and exhaust under the car, and if the front pipe flange does not sit in the OEM location the cat will need to be refit for any other pipe to work. It also usually doesn't need a brand name or something like that, but more something like a part number. Usually for exhaust parts, on silencers and cat units specifically, there is a badge that reads the certificate number that belongs to these exhaust parts under EU regulation. You get these numbers after you put a part or group of parts through the tedious testing according to EU vehicle legislation and they pass. You can find these "part numbers" on various parts throughout a EU vehicle. On windows, headlights, engine parts, seat belts and so on. All these parts have gone through standardized testing and acquired a so called ECE or EG Certificate that makes them legal to use by themselves in all countries that adhere to these standards. You can also not alter these parts in any way, if you do they become illegal. An example for stampings on an exterior lighting part, the people who need to know can find the documentation for this unit in a database. I do not know what all the standards and so on mean.
    • Rezz
      Anyone know this frontpipe?

      By Rezz · Posted

      If that was the case I suppose you could call it "Mein's" brand....  ... I'll see myself out... 😅
×
×
  • Create New...