EAS Pressure switch?

[Marshall]

Hi,
I am not sure, but I have read somewhere that the pressure switch may be the problem... Allow me elaborate:

I have Pauls EAS Unlock and I can "Pump on" no problems.
In normal operation, the compressor will come on randomly and pump away for a short time and stop
If I select a height, the selector light will flash, but the compressor won't necesarrily come on. It will flash forever without going into fault mode
The compressor was working fine, and then one day, not
All the fuses are OK and there are no visible leaks
The suspension goes down overnight. I have fitted the O ring kit from Paul and the previous owner did the pump seal.
Will "test book" be able to pick up this sort of fault
So what do you think? would this be the pressure switch? If so, where can I get one? If I can't get the answer here, I may have to take it to the local Land Rover workshop...

Thanks in advance for your help...

Pete

[RR P38]

Is your suspension going down on all 4 corners or just 1 corner or 1 end of the RR?
Is there any difference with operation of the system if you use the on dash override button?
Have you tried pulling the EAS relay out over night? what happens?

[Rupert Prior]

hi
i'm a mobile auto electrician and specialise in p38 range rovers. if you can get over to, or are close to the Bexley area i will happily do a free diagnostic and leak check on the system for you. call me on 0421 509083.
regards
Rupert

[Grumbles]

That's a generous offer Rupert - good on you. :D

[Marshall]

Is your suspension going down on all 4 corners or just 1 corner or 1 end of the RR?
Is there any difference with operation of the system if you use the on dash override button?
Have you tried pulling the EAS relay out over night? what happens?

Going down on all four corners, and the over ride button just looks nice on the dash but I fear it does didley squat...
As far as the relay goes (relay 20 I pressume) no I haven't tried pulling it out. Are standard MY00 relays made by Narva? if not, I suspect this was replaced by the previous owner...

[Marshall]

hi
i'm a mobile auto electrician and specialise in p38 range rovers. if you can get over to, or are close to the Bexley area i will happily do a free diagnostic and leak check on the system for you. call me on 0421 509083.
regards
Rupert

Thanks Rupert! I will try to call you in the next few days...:)

[RR P38]

Going down on all four corners, and the over ride button just looks nice on the dash but I fear it does didley squat...
As far as the relay goes (relay 20 I pressume) no I haven't tried pulling it out. Are standard MY00 relays made by Narva? if not, I suspect this was replaced by the previous owner...

A good starting point is probably getting rid of the Narva relay and see what happens.
If all 4 corners are on the bump stops in the mornings its either a manifold leak or the EAS ECU is not shutting down (relay??)
Sounds like Rupert will be sorting it for you.

[PaulP38a]

onya Rupert, you're a good bloke.

Marshall, rather than playing with the EAS relay in the fuse box, try pulling the EAS Delay Timer under the passenger seat or leaving a door open overnight. If it still drops, you have a mechanical issue (i.e. air fitting, valve block, NRV, diaphragm, air spring etc) rather than an electircal/logic problem.

Cheers, Paul.

[Marshall]

I disconnected the battery last night... the car only lowered 1cm...

[Marshall]

well, thanks for the replies, and thanks again for your advice Rupert.

I fixed (most) of the leaks, just one left! The compressor seemed to work again, all be it intermittently, and better if there was already air in the system. I ended up getting my local LR workshop to have a quick squiz during it's service today, and they told me the compressor is pumping away merrily... with no output:(

Where is the best place to get a replacement EAS compressor? I don't really feel like paying the quoted $660...

[RR P38]

well, thanks for the replies, and thanks again for your advice Rupert.

I fixed (most) of the leaks, just one left! The compressor seemed to work again, all be it intermittently, and better if there was already air in the system. I ended up getting my local LR workshop to have a quick squiz during it's service today, and they told me the compressor is pumping away merrily... with no output:(

Where is the best place to get a replacement EAS compressor? I don't really feel like paying the quoted $660...

If you are handy with the spanners you can just put a kit through the compressor.
Its pretty easy, last time i did the job it was $50

[RR P38]

You want one of these.
You will find it locally.

P38 Range Rover Air Compressor Piston Seal & Liner Kit | eBay (http://www.ebay.com.au/itm/110695559079)

[PaulP38a]

You want one of these.
You will find it locally.

P38 Range Rover Air Compressor Piston Seal & Liner Kit | eBay (http://www.ebay.com.au/itm/110695559079)

Good luck finding it locally at that price. Even with his postage from the UK, that is half what we sell the Compressor Seal and Cylinder Sleeve for... and I dropped prices a while ago to pass on savings from the improved exchange rate :o

The quality of his kit seems ok too, based on the products he sent me about 6 months ago when we were discussing a partnering arrangement.

Cheers, Paul.

[RR P38]

There you go Hard Range have them $80.

When i put the kit through mine i stripped the electric motor down and removed a lot of carbon from around the brushes.
They are quiet a nicely engineered piece of gear on the compressor side.

[PaulP38a]

There you go Hard Range have them $80.

When i put the kit through mine i stripped the electric motor down and removed a lot of carbon from around the brushes.
They are quiet a nicely engineered piece of gear on the compressor side.

Did you remove the plastic ring around the bearing while you had the end off the compressor? If not, next time you take it apart, remove the plastic ring (they are usually loose anyway) and throw it away. They serve no useful purpose, and when they loosen up they cause premature failure of the bearing.
Let me know if you ever need to replace the brushes. We do those too, but I still haven't got around to posting them at the shop... as well as a bunch of other stuff related to the EAS.

Cheers, Paul.

[RR P38]

Yep did all that, must be 7-8 years ago now and still running fine.
Not that my EAS pump has to work too hard i have an isolation switch on the dash for it. I dont need to run it more than a few minutes a day.

[Marshall]

previous owner told me he did that:(
but thanks anyway...