Advise On Fitting New Rear Height Sensor

[morto]

Hello all its D-Day tomorrow i will be fitting a new rear height sensor to my c52.2hdi 2002 plate, if after ive fitted it it still wont go up,, its scrapyard time!! iv put 0.5 thru the system to try and bleed the rear but no go!! the front will raise perfect and if i force the back up  with a jack with the front on full height the rear will raise to the top but will not level just sinks to the bottom.. to be honest iv had enuff.. so any help will be appreciated!!

[paul.h]

When coastline taxis is back on the forum he will probably be able to help due to his extensive experience on the C5.

 

I still suspect it is air in the system that needs bleeding out. Jacking the back up is not likely to suck oil through the pump and in to the rear strut, more likely to suck air in from the tank through the oil return pipe, so once the jack is removed the back will drop back down. If you try the pump with the back jacked up there will probably just be more air that needs bleeding out.

 

If the new height sensor does not work (the one on the front is the same part), some things to try may be:

- slackening the rear drain screw may help let the air out.

- slackening the lds pipe at the strut may let the air out

- undoing the oil return pipe at the gaiter may help let the air out - was the gaiter already on the strut since it should be fitted with the wire clip so the square lump on the gaiter is positioned over the hole in the strut and the clip wires do not block the channel around the strut.

[morto]

thanks pal, ive bleed the system for ages going up and down and had the tank at over 1bar but makes no difference,, the story was when i took it for the mot the whole suspension was working fine,, the mot guy said ive got to take  the suspension write to the top to check for leaks in the system,, he did that and then took it write down to the bottom settting, the front leveled and the rear stayed on the floor.. not his fault this would of happened the next time i touched the buttons, when i got the car home i noticed that there was LDS fluid comming out of the rear right rubber boot so got a full new hydraulic ram unit with new boot, put the new unit on and still wud not work? i thought it must be a sphere but was told on this forum that a faulty sphere can not stop the rear from raising?

[paul.h]

After reading this it is probably not air in the system and hopefully the new sensor will sort it. I had a leaking rear strut on our C5, just a small amount from the end of the gaiter. At first I tried replacing the gaiter thinking it may have been leaking but it continued to leak a small bit of fluid. Eventually I had the strut replaced nearly a year later at the dealer at MOT time. Throughout this time the rear suspension continued to go up and down as normal.

[coastline taxis]

What spec level is your suspension have you got 2 or 3 speres on the back. as on some models the middle sphere is a anti sink sphere

[morto]

What spec level is your suspension have you got 2 or 3 speres on the back. as on some models the middle sphere is a anti sink sphere

hi mate its got 3 sphere,s   iv got the suspension working know it was the rear height sensor its just a tad to high but ok,, needs setting with lexia

[paul.h]

This topic on ride height measurement may help http://www.citroen-owners-club.co.uk/citroen/topic/14396-ride-height-measurement/