i give up

[captainslow72]

My p reg Xantia estate front suspension has dropped I have removed cleaned and regreased height corrector no joy took it to the nearest specialist last night as could not get the thing to raise he spent and hour under her trying no joy so bought second hand working height corrector and fitted it tried to set it and still no joy have no idea what else to look at. Even had the pump reconditioned. Plenty of fluid in her and no visible leaks. Help please

[Old-Guy]

You don't say what happens when you move the height control to each of its 4 positions (waiting 30 seconds at each position). Does the rear go up and down as it should but the front stays on the bump stops (down on the floor)?

If so, the only thing that I can think of that fits the symptoms is that the security valve is stuck shut.

[captainslow72]

Hi yes that is exactly what is happening but there is fluid getting to the height corrector.

[Mandrake]

It won't be the security valve - that would prevent the rear suspension working as well as both front and rear suspension are fed from the security valve.

My first guess would be that when you refitted the height corrector you accidentally reversed the inlet and return pipes - these are the two steel pipes that are side by side on one edge of the height corrector. It's an easy mistake to make, and it causes the height corrector to work back to front.

If they are reversed and the manual height lever is in the normal position the suspension will stay right down because the height corrector is trying to open the port to the high pressure supply to lift the suspension but it is actually the overflow return.

I would try idling the engine and set the manual override lever on the console fully down and leave it for a full 5 minutes - bet you it starts to rise at the front after a few minutes.

If it does, fully raise the height lever for 5 minutes to let the front suspension go down, turn off the engine, open the pressure regulator bleed screw, then reverse the two pipes again.

If the problem is not reversed pipes you need to check carefully that the height corrector linkage is adjusted correctly and not jammed out of position.

One other thing it could be is a faulty anti-sink valve for the front suspension but that seems unlikely.