Thread: New SLS Problem

I had all sorts of drama's with the SLS on my 04 D2.
One day it would work just fine and the next day it would dump all the air and I was travelling on the stops (very uncomfortable and dangerous).
I had the guys at the Landrover workshop sus the SLS out and they couldn't fault it, They did change out a solenoid on the pump but everything else checked out AOK .
The crunch came when I had to travel 500k's back from Sharks bay towing a boat with NO air suspension bouncing about on the stops, I went for the spring conversion because I had a gut full of the unreliability factor with the SLS and it was Far cheaper and easier than replacing the pump, air bags and all the air lines.
Yes the ride is Not as good on the coil springs But at least I won't be stuck halfway along the Gibb River Road with No rear suspension

The compressor is susceptible to water ingress,, that amount of time is more than long enough to fill it full of water.

+1^^^ classic case of weak compressor ... a repair kit is enough to make it work again: Wabco Air Suspension Compressor Piston Repair Kit for Audi Allroad - YouTube , also clean the filter which is beneath the LH rear lamp(wash it well and dry it) ...that pulsing after the ignition is off it's a quite common missbehaviour i couldn't find a logical explanation for it cos the compressor is supposed to work only with engine running so maybe the SLABS which stays under power up to 1.5 hour after the ignition was off is missinterpreting some residual voltage as crank signal or something

Thanks everyone for your responses. I think I'll turn my attention to the compressor, given the feedback above.

I'm wondering if it would be possible to use a standard compressor (portable type usually carried for tyre inflation) rather than repairing / replacing the Wabco unit?
I could then mount the compressor remotely and just run an airline from the compressor to the existing manifold in the box under the vehicle (with suitable hose adaptors of course).
It looks like the existing unit seems to produce around 10 bar (~150 psi) / 170lpm, which is a similar output to the typical tyre inflation offerings out there, which can be had for less than $100...

Given the age of the vehicle (and I'm not a purist!) I'm not too fussed about retaining the vehicle in 'standard' condition.
I also can't rule out being stuck in water again and don't want to have to replace / repair the compressor every time the Disco goes swimming!

Cheers

I guess if you mount the compressor elsewhere then you could make it work. I looked at trying to replace in situ and the issue is the remote air inlet, I haven't seen a standard compressor with that.
You could almost certainly make it work by taking a standard compressor apart and getting the line fitted, I don't have a spare one to test.

The reason I looked was the same as you, the original unit is getting on and expensive to replace, whereas you can get a pretty stonking compressor for less than $150. You may need to relay it though, I didn't think the standard one is terribly strong and doesn't draw major amps (and hence has the appropriate wiring) a beefy modern one might be more like 30amps at full chat.

I guess the remote one would almost certainly need to be in the rear cargo area, so you'd have to reserve a bit of space around it for breathing and cooling. Starts taking up a fair bit of space....

Can't do a search on my iPhone but I have read a few post on here that have converted to another remote compressor.
I'll have a search when at home and see if I can find the posts.
Also picking up the air bag gear from the previous owner today to reinstall in my truck, so will be looking at the remote mounting of the compressor etc.
I'll post what I trawl up on here

Yep, here you go:

D2, SLS Pump alternative.

i think there's an ARB install as well.

cheers
Simon

have a look on my gallery.last page here is what worked for me,been there two years with no problems.you will find the compressor will be noisy but if it is all working it rarley comes on anyway