Ok so I have an update the car is back up to normal ride height bit it hasn't done it on its own.
We ended up blowing air through the compressor and manually raising it with the diagnostic machine.

Question is why would it raise with the computer plugged in but not on its own
 
What is the measurement you have now between the ctr of wheel and the bottom of the wheel arch?

Std is 473mm +-15mm.


Did you try to engage ORM and then deselect it? If you did , did anything happen?

Cheers
 
neilly said:
What is the measurement you have now between the ctr of wheel and the bottom of the wheel arch?

Std is 473mm +-15mm.


Did you try to engage ORM and then deselect it? If you did , did anything happen?

Cheers
Click to expand...
Around 468/470. ORM not working, press it, it flashes but no movement
 
neilly said:
Did you have any fault codes showing?

Cheers
Click to expand...
Yes loads and all linked with the compressor unfortunately I left the list at garage. There were both level sensors both control valves. Exhaust valve duty exceeded or something and another duty exceeded code too
 
Duty exceeded code , sounds like your compressor was asked to work for too long and it has been switched off.

Did you clear the faults and then retry it?
Another thing you can try , if it helps get you out of the doodoo, is these off of the bay.
281754172327

The seller does a lot of different options for the D2.

Cheers
 
neilly said:
Duty exceeded code , sounds like your compressor was asked to work for too long and it has been switched off.

Did you clear the faults and then retry it?
Another thing you can try , if it helps get you out of the doodoo, is these off of the bay.
281754172327

The seller does a lot of different options for the D2.

Cheers[/QUO
Codes all cleared and all stayed off. What I am assuming is that my car has never worked properly and has been running around on the air that'd been in the system as it has never changed height in the time I've had it.
What I can't understand is how lifting it off the floor made it dump all its air
Click to expand...
 
Quote:-"
Codes all cleared and all stayed off. What I am assuming is that my car has never worked properly and has been running around on the air that'd been in the system as it has never changed height in the time I've had it.
What I can't understand is how lifting it off the floor made it dump all its air"

The only reason I can think of for as you say the suspension dumping its air.
By using a two post lift, the rear axle was left hanging and therefore the ride height sensors registered that the suspension was too high, the distance between the axle and the body was out of spec. and consequently the SLABS ECU dumped air from the system in order to bring the suspension back into spec. With the suspension hanging the ECU continued to see the ride height sensors showing too high and so the system continued to dump air, until the system was totally depressurised.
 
brian47 said:
Quote:-"
Codes all cleared and all stayed off. What I am assuming is that my car has never worked properly and has been running around on the air that'd been in the system as it has never changed height in the time I've had it.
What I can't understand is how lifting it off the floor made it dump all its air"

The only reason I can think of for as you say the suspension dumping its air.
By using a two post lift, the rear axle and therefore the ride height sensors registered that the suspension was too high and consequently the SLABS ECU dumped air from the system in order to bring the suspension back into spec. With the suspension hanging the ECU continued to see the ride height sensors showing too high and so the system continued to dump air, until the system was totally depressurised.
Click to expand...
Thanks Brian. Makes sense I never thought of it that way.
We are thinking that the compressor may actually be working but producing very little air so I think I'm going to try a compressor repair kit see if this works as the rest of the system is air tight
 
Groutmanshaun said:
Thanks Brian. Makes sense I never thought of it that way.
We are thinking that the compressor may actually be working but producing very little air so I think I'm going to try a compressor repair kit see if this works as the rest of the system is air tight
Click to expand...
The compressor doesn't work in long pumping periods, it works in short bursts. That way the motor driving the pump does not exceed its duty cycle.
if the compressor were designed to work for longer periods, it would require a much larger motor.
 
brian47 said:
The compressor doesn't work in long pumping periods, it works in short bursts. That way the motor driving the pump does not exceed its duty cycle.
if the compressor were designed to work for longer periods, it would require a much larger motor.
Click to expand...
Yes I'd noticed these short burst whilst we were playing about with it before but there air it's producing whilst operating is no more than your breathe would be hence thinking about changinging piston ring
 
I used the repair kit on mine and also changed the granules in the air dryer and filters at the same time. The bolts holding the compressor box onto the chassis were really seized but it wasn't hard to remove the cylinder head/dryer unit and replace the piston ring in situ.
 
You must log in or register to reply here.

Similar threads

B
P38A 1996 4.6 Auto HSE. driver side bags not inflating after valve block rebuild.
Replies
17
Views
902
nigelbb
N
Bustrucket
Disco 2 Td5 Overheating
Replies
3
Views
629
johnlad
johnlad
T
Disco 2 TD5 Air suspension collapse
Replies
3
Views
826
Andy Warren
Andy Warren
S
Smoking from oil filler
Replies
4
Views
424
Skanny78
S
J
Disco 2 TD5 Landmark 2004 - hi-line system - aftermarket stereo rubbish radio reception
Replies
7
Views
1K
Jayridium
J