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

Concept Garage
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Concept Garage Apprentice

Concept Garage

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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

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