4wd And A-lsd Light One... Please Help?

[GTRUK]

Hi guys, I'm hoping someone here can help me out with what seems to be a bit of an unusual problem.

I have a R33 GTR VSpec. When I turn the car on (start engine) the 4WD pump whines and works like it should? But after about 2-4 minutes (variable) the 4WD and A-LSD lights come on and the ECU in the boot flashes codes 53 "Pressure switch and circuit". These lights come on as soon as the pump stops. But if I start to drive the car before these lights come on (i.e. almost immediately after starting it up), the lights remain off and the pump works continuously during the journey. It only seems to stop on idle or when stationary for about 2-4minutes.

The fluid was low but I have topped it up (not bled it).

Has anyone else ever had this problem? Any suggestions on what this might be?

Any help much appreciated!!!

Edited November 29, 2007 by GTRUK

[32GTRVSPECII]

Ok suffering the same situation atm, but with a R32 GTR the 4wd light seems to like being on and now it is doing it more frequently what is this as my ecu has been put on a diag computer and isnt flashing any signals?

[32GTRVSPECII]

Ok so after a bit of searching and bleeding the system, the torque gauge is still slow to react to front torque and the 4wd light comes on after 1min of start up if not straight away....? Need help!!!!!

Mick.