Sorry if there is an answer to this question somewhere, but I couldn't find it.
Vehicle: Opel Calibra C20LET (blacktop) '96 4x4
So, yesterday I took my Cali for a wash and when it was over I started the engine to move it out of the washing garage. I heard a strange noise from under the hood. Stopped the engine, opened the bonnet and started the engine again. The strange noise was coming from a PAS fluid pump, but it stopped after 5-10 seconds.
When I moved the car reverse out of the washing garage I notice a giant PAS fluid spot on the floor. I also noticed that 4x4 light on the dashboard stayed on and I also noticed that I don;t have power assisted steering any more.
Parked the car near by, bought a canister of PAS fluid. When I opened the PAS fluid reservoir I noticed it's half empty, so I filled it up using the protocol (ignition ON, pumped the brake pad for 25 times and then filled it up to the "hot" level since the engine was hot). When I started the engine again, all fluid leaked on the floor again. I checked beneath the car and I noticed the fluid is coming out from the hose connected to the transfer box.
I did diagnostics with Tech1 device and I got error code:74 Power Assisted Steering PAS pressure less than 10 bar
Well, that's kind of logic as all the PAS fluid leaked out (well, not all of it, but about 800ml)
I changed the Pressure Accumulator Bulb today and the problem remained the same. After change, again I filled the PAS fluid reservoir and started the engine, but again, 800ml of PAS fluid I poured in got out from that tbox hose I mentioned.
Now the bulb I put was not new so there is a chance It's not operational.
However, I'm wondering what can cause PAS fluid to leak out of the tbox hose??
Everything else on the car works just fine. So it's just that 4x4 light is on and 4x4 drive is disengaged (I've tried it and it doesn't work) and power assisted steering doesn't work