W

Wellsy

Member
Hi all just brought my first range rover 2.5 dse r plate
Since buying the vehicle I have notice when I leave the vehicle over night it's sat on its bump stops the next morning .
I'm having to start her up and leave the door open after approx 10 min she goes up as she should and no problems for the rest of the day , so I'm a bit lost .
I am mechanically minded but never worked on air before so not sure where to start.
I do have a programme the previous bloke gave me with cables he said will set and read air suspension .
Was told it had a new compressor fitted looks new , also noticed when car is shut off there is a quick faint hiss noise from compressor that lasts about half a second as it it is dumping air if you know what I mean, any help would be appreciated .
Thanks Craig
 
That's all normal, except for car being on bumpstops in the morning.

The fact that you have to leave the door open in the morning to fill up the tank makes me wonder, the car shouldn't use all the air in the tank just to level out during the night. A dodgy solenoid or maybe a faulty air suspension sensor.

If you can safely leave the car with one door open during the night, do so. Measure the height of each wheel arch above ground in the evening and in the morning, as the open door freezes the suspension levelling process, you should have a better idea if and where there is a leak.
 
chort said:
That's all normal, except for car being on bumpstops in the morning.

The fact that you have to leave the door open in the morning to fill up the tank makes me wonder, the car shouldn't use all the air in the tank just to level out during the night. A dodgy solenoid or maybe a faulty air suspension sensor.

If you can safely leave the car with one door open during the night, do so. Measure the height of each wheel arch above ground in the evening and in the morning, as the open door freezes the suspension levelling process, you should have a better idea if and where there is a leak.
Click to expand...
It won't use any air during the leveling process, as it will only ever lower itself to match its lowest corner...

If you are having to fill the tank each day - that is the clue....you have a leak on the storage side of the system....

If it is always on the bumps over night, it is either not parked on a level or the airbags are leaking too....

These are reported to have a life of 7/8 years (80k miles or so - as Datatek reminds us frequently)....so if they are the orignal bags, no doubt they are gone by now.

Get under there with some soapy water and see if you can see bubbles forming, check the pipes and collets too.

If the storage side is leaking, this could be the NRV1 or Diaphram Valve leaking, a leaking pipe or leaking tank....

First step would also be to check the compressor using Wammers 'Thumb' check....see the How To Section at the top of the Range Rover foum for how to check the Compressor is generating enough pressure....

Keep us up to date on here, as the Wammer and Datatek are clued up to the gunnels on the EAS and will always be a true font of knowledge.
 
chort said:
That's all normal, except for car being on bumpstops in the morning.

The fact that you have to leave the door open in the morning to fill up the tank makes me wonder, the car shouldn't use all the air in the tank just to level out during the night. A dodgy solenoid or maybe a faulty air suspension sensor.

If you can safely leave the car with one door open during the night, do so. Measure the height of each wheel arch above ground in the evening and in the morning, as the open door freezes the suspension levelling process, you should have a better idea if and where there is a leak.
Click to expand...
Or remove the EAS Delay Timer from under the Drivers seat....safer and you can lock the car!!
 
Hi sorry it's took so long had a busy weekend I ve followed wammers thumb check even though it's a new compressor fitted a month ago and everything seems fine , also the comments about leaving the door open over night I'm afraid the area I live in won't allow that lol also noticed when it shuts down its returning ( air ) back to the compressor is it suppose to do that also been told it has had new airbags on the front woke up this morning back to it bump stops and same process have to leave door open for 8-10 min for it to level out
 
If it sinks over night it has a leak. Old airsprings are the most common source of leaks, but melted airlines from exhaust blows, "O" rings in the valve block and the collets where the pipes enter the airsprings and valve block are also possible leakage points.
 
You have a leak. Find it, or your new compressor will become an old one PDQ.
 
Ok cheers for the help I'll have a search for it over next few days and keep you in touch with my findings
 
Right up date it's got new airbags all round parked it on a flat put in off road setting and locked the suspension off left over night front still up back end on bump stops just had it on a ramp and noticed the n/s/r had dropped slightly but rest was still sat at right height so to me that's the side where the problem is ? Maybe any ideas please
 
Have you gone over all the pipes and fittings with a soapy water spray??

Any air bubbles indicate a leak....

If the bags are new and it still drops with the EAS Delay timer out, it is either the pipework, fitting collets or valve block.

Take the exhaust filter off the Valve Block and see if it covered in white deposits...if it is, it could be a sign the Air Dryer Desicant is breaking up.....this can get lodged under a valve seat not allowing it to seal properly....

Go over the pipes and collets with soapy water, with vehicle in all the ride heights, as some leaks only show up when the air bag opens up and un-folds....

if that seems OK, time to look at the valve block....
 
I be tried the soapy water over the pipes I can get to could get to the pipes that run along top of chassis near the door area also done it to all the collets around the valve block and the air dyer I think it's called near the rad front right had c
 
Corner check all collects on top of air bags the valve block is new as well so don't suspect that but haven't check it at all the diff ride heights so I'll do that next which will be tomorrow when I can get it on a ramp at work
 
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