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Registered
1995-2002 Range Rover P38A
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1,365 Posts
Discussion Starter #1
Hi All,

I wouldn't ask if it weren't important!

Work done:
* New compressor fitted and teed into the blue line to the valve block in the EAS box
* Valve fitted between oem comp and new tee, to stop air escaping back through the oem comp when running the new.
* New valve block and driver pack
* I just checked all the pipe connections to the valve block for location
* both compressors work (not at the the same time, of course).
* no faults showing on the display
* said my prayers nicely


Problem:

* the reservoir doesn't seem to be filling - I left it maybe 10 minutes and the car doesn't lift at all.
* I have tried both compressors, and now back to OEM.

What do I check now?

Could I have messed up one of the multi connectors in the eas box?

I thought that the reservoir took about 10 minutes to fill .....
 

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Registered
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649 Posts
I suggest taking the one way valve out and trying each compressor on it's own (while connected to the system, as though it's the only compressor).
 

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Registered
1995-2002 Range Rover P38A
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1,365 Posts
Discussion Starter #3
Thanks.

I have now restored the oem comp so that the only difference with original is that there is a tee piece with a pipe to the new comp output.

The new comp has a non return valve at its output, so pressure from the oem shouldn't escape back into the new.

Hope I explained this properly!

If the system is completely empty of air, 10 minutes should be enough to restore it?
 

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Premium Member
2002-2005 Range Rover MkIII / L322
Joined
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3,622 Posts
I would go back to one compressor and lose the T just to check to see if everything else is working. IMO, you're losing pressure through the extra compressor somehow. If it works with one compressor and no T, you'll need to figure out a better way to get both of them into the system.
 

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JACK'S GRANDAD
Joined
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9,235 Posts
ahem,,,,,,check valve,one way valve, whatever you want to call it......ahem.. :thumb:

martin
 

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FOUNDING MEMBER
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4,509 Posts
How is it wired?? When either compressor runs you have to activate the diaphragm solenoid (blue wires), or all your air will go out the exhaust.
 

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Registered
1995-2002 Range Rover P38A
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1,365 Posts
Discussion Starter #8
Beginning to run for cover ....

I was pretty sure it wasn't pneumatic, so I checked the multi pug in the eas box - yes, it wasn't pushed home properly.

I'm off now to see if that's fixed it.

I begin to think that I'm dangerous!
 

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Registered
1995-2002 Range Rover P38A
Joined
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1,365 Posts
Discussion Starter #9
Re: Secondary compressor now no lift - SOLVED

It is working!

Recap:

--New valve block
--New driver pack
--Secondary compressor, leaving oem disconnected electrically and isolated pneumatically, but available as a standby.

Post Mortem - why she wouldn't lift:

--Severe air leak from port 5 (8mm - from dryer I think) - re-trim and reinsert fully into valve block
--The two valves I bought to isolate the oem compressor and to isolate the tyre inflation outlet are, possibly, slightly leaky - I'm going to keep an eye on them.

That seems to be it. I'm trying to do a write up for posting.

Many many thanks for all the help.
 
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