Power Steering Woes

[Kuroneko_Nismeow]

Hi guys,

So my r32 GTR has been having trouble getting PS to work again after replacing bits.  The system blew it's main feed line and sucked up tons of air and it blew the bearing out the front. I had since rebuilt a donor PS pump, changed every soft line in engine bay, replaced all copper washers for high pressure lines, and replaced rear return line to rack. I have bled the car over and over on and off. I have sucked fluid out the rear bleed valves. Still no assist when the car is put on the ground.  No leaks anywhere and no bad sounds at startup or ever.

[GTSBoy]

Could be electrical. There is a solenoid on the rack that is driven by the HICAS CU that gives you your variable assist. If that is not working, you get heavy steering. The solenoid could be crook, or not even connected. The wires that run to it are in the same loom as the power wires for the oxy sensor (well, at least they are on an RB20 car, can only guess that they are similar on RB26) and have been known to get damaged when that loom melts. That last example just to give you an idea of how weird the cause of death of some electrical things can be.

[Kuroneko_Nismeow]

hmmm maybe. But everything was working perfectly fine before it sucked up air and needed new pump. Everything is plugged in.

[nouveau_poor]

When I replaced the low pressure hose in mine there's a little electric plug towards the driver's side of the vehicle. Maybe check that it (and any other plug) wasn't somehow burnt out/damaged from when your line blew? Not sure if that alone could cripple the entire system but if everything is definitely mechanically sound then electrical would likely be the culprit.