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TD5 Rear Air suspension problem

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lyndon:
I had a problem with the air suspension when I bought my 1999 TD5 ES. Occasionally she would sit down on the bump stops on the nearside rear. That was about a year ago. She went back to the dealer I bought her from and they replaced both the rear airbags. Not had a days trouble since until now. Suddenly she is sitting on her bump stops again on the rear nearside. But this time its everytime I park her up. The strange thing is I have just had a good look for a leak with soapy water and for 5 minutes nothing not a sauage and she stayed up fine. Then all of a sudden I could hear air escaping so soaked the rear nearside air bag with soapy water and air is escaping from around the bottom of the airbag where the cylinder enters the bag. Now I can understand there being a leak these things happen but why the delay ?.  If it started to leak straight away I would say no problem seals gone, but it holds air for 5 minutes then leaks. Anyone got any suggestions ?.

lyndon:
Anyone?.

Range Rover Blues:
I don't know about the delay unless it's self-levelling when it's parked like the RRC, but the leak around the bottom of thr air bag could just be much that's worked it's way in there.  Drop the alxe away by jacking under the chassi and give it a gentle hosing to removed any debris (don't wash it further in) or clean with a rag.

lyndon:
Thanks mate. It still self levels when I switch off and lock up. Small escape of air can be heard and it drops an inch or so. Its always done this. Tonight it stayed up for a good ten minutes then just dropped. You can hear the air escape. I am not sure where the air comes out when the suspension is lowered after being raised but could it be from the botom of the air bag and therefore something is wrong with the sensor or valve?. Doesn't seem likely, but I was thinking it might be a loose clip holding the bag on at the bottom, but then surely if thats the case there would be no delay. Its as if the bag holds the air and then for some reason allows it to escape like flicking a switch if you know what I mean.

Might have to speak to Landrover dealer tomorrow. Its booked in to be looked at on Wednesday by a local small independant who specialised in Landrovers and has all the computer kit to check the electronic stuff out. Don't want to be stung for a new airbag if I don't need one. I will try out what you say mate see if it works.

Lyndon

Range Rover Blues:
It's possible that there is muck trapped in one of the vale seals within the control unit.  Unlike the RRC your DII has no reservoir for compressed air, so the valve block is a much simpler item but still relies on O rings for seals in the valves.  It could be one of these is split or contaminated, also it could be a faulty rife height sensor, but if it were I'd expect you wouldn't be able to engage high profile.

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