Originally Posted by
dojj
have you tried the pressure switch?
from memory it's the green one with 5 wires coming out of it
the only issue is that if you undo it the dissimilar metals tend to strip the threads
Wel, there has actually been a saga. I posted a few weeks ago about binding brakes and in trying to solve that issue suddenly the ABS ECU self-check lights stayed on. I'm not sure if I have cured that issue yet but my have.
Basically I changed the main actuator (master) unit and that did not cure the binding but led me to think the pump unit was faulty as there appeared to bee too much pressure in the system. (Binding was temporarily solved but I had a (very small) leak between pump and main unit. When done up the problem returned.)
I changed the whole pump unit but could not bleed it. Took off 'new' pump and decided to change pressure switch. But I found the threads crossed so could only replace my original pump. As that had apparently not worked I used a spare pressure switch I had (off an XR4x4, actually - red one). Changing one item at a time to see what failed / worked.
I think it was then that the self-check failed. I then changed back to my original green pressure switch and I still have the self-test problem. That's where I am today.
Whilst it is totally a Sierra ABS system, it is actually in this ...
FYI: 5.0l TVR Griffiths V8 (originally Rover V8)