P38A Eas specialists

sherp · Jan 17, 2020

Hi. I’ve been struggling with the eas on my P38 Overfinch project...I’ve been through all the helpful info here, rebuilt valve block and compressor, fitted new gen 2 springs and I’ve still got a car on its bump stops with a tank that won’t fill due to air pulsing out the valve block silencer, with same symptoms when I swap for another valve block I have.

I think I’m about to give up, and wondered if anyone can recommend a good specialist in this area to help finish what I’ve started! Based in Derbyshire but don’t mind sending it to the right place.

many thanks

Datatek · Jan 17, 2020

sherp said:
Hi. I’ve been struggling with the eas on my P38 Overfinch project...I’ve been through all the helpful info here, rebuilt valve block and compressor, fitted new gen 2 springs and I’ve still got a car on its bump stops with a tank that won’t fill due to air pulsing out the valve block silencer, with same symptoms when I swap for another valve block I have.

I think I’m about to give up, and wondered if anyone can recommend a good specialist in this area to help finish what I’ve started! Based in Derbyshire but don’t mind sending it to the right place.

many thanks

Sounds like the diaphragm valve in the valve block may be faulty, but it could be the exhaust valve or the driver pack.
Not sure you will find any specialist commercial garages for the EAS, most run a mile when it's mentioned. Actually it's quite a simple system, but needs a bit of logical thought.

wammers · Jan 17, 2020

Datatek said:
Sounds like the diaphragm valve in the valve block may be faulty, but it could be the exhaust valve or the driver pack.
Not sure you will find any specialist commercial garages for the EAS, most run a mile when it's mentioned. Actually it's quite a simple system, but needs a bit of logical thought.

Driver pac has nothing to do with compressor side of system

Datatek · Jan 17, 2020

wammers said:
Driver pac has nothing to do with compressor side of system

But it does operate the exhaust valve does it not?

sherp · Jan 17, 2020

Thanks for the replies. I’ve enjoyed learning about the system it’s just I’m getting a bit frustrated. I only wanted to use a garage if I knew I wasn’t having to pay for their time to ‘bumble around’ like I have been doing. I might have a closer look myself before I send it anywhere. I’ll check the items you have mentioned

wammers · Jan 17, 2020

Datatek said:
But it does operate the exhaust valve does it not?

No not the compressor exhaust valve.

Datatek · Jan 17, 2020

wammers said:
No not the compressor exhaust valve.

Red/Orange wire driver pack to exhaust valve. C139 pin 17

tarphenry · Jan 17, 2020

When I was having a similar problem, it was the non return valves, I replaced all 3 (2 one way 1the other) and my problem was solved. certainly worth looking at

wammers · Jan 17, 2020

Datatek said:
Red/Orange wire driver pack to exhaust valve. C139 pin 17

That is the exhaust valve for the bags the exhaust valve for the compressor is the diaphragm valve which is powered by the compressor relay.

tomcat59alan · Jan 17, 2020

tarphenry said:
When I was having a similar problem, it was the non return valves, I replaced all 3 (2 one way 1the other) and my problem was solved. certainly worth looking at

Try a PM to @kurtjohnson10 for NRV's

pete12345 · Jan 17, 2020

You haven’t got to go to a garage with the advice on here you will get it sorted trust me from past experience with the advisor from Warner’s and data you will be up and running on air I’m a complete novice at mechanics but they got me through eas misery good luck and any parts you need kurtjohnsons the eas man

sherp · Jan 17, 2020

pete12345 said:
You haven’t got to go to a garage with the advice on here you will get it sorted trust me from past experience with the advisor from Warner’s and data you will be up and running on air I’m a complete novice at mechanics but they got me through eas misery good luck and any parts you need kurtjohnsons the eas man

Yeah the info on here has helped me no end so far. Just at a low ebb today as it’s been off the road for a month and want to get some miles on it!

pete12345 · Jan 17, 2020

I know your woes my friend I’ve still got the compressor & valve block that I rebuilt that didn’t cure the problem so bit the bullet and got one from kurt fixed a leaking pipe put on a new air dryer and all was cured

sherp · Jan 17, 2020

pete12345 said:
I know your woes my friend I’ve still got the compressor & valve block that I rebuilt that didn’t cure the problem so bit the bullet and got one from kurt fixed a leaking pipe put on a new air dryer and all was cured

Thanks mate, I’m going down your route and sent him a pm

oakey · Jan 17, 2020

With Kurt's bits all your woes will be over I can assure you, You could send him your rebuilt valve block and he will check it out and fix any problems,

pete12345 · Jan 17, 2020

Yer I may get round to it this year then I've always got spares

kurtjohnson10 · Jan 17, 2020

tomcat59alan said:
Try a PM to @kurtjohnson10 for NRV's

Thanks @tomcat59alan , i have sent the op a private message

brianp38dse · Jan 18, 2020

No no no its buggered and needs throwing away

, i will take it of your hands, an Overfinch you say is it the 650r

sherp · Jan 18, 2020

brianp38dse said:
No no no its buggered and needs throwing away, i will take it of your hands, an Overfinch you say is it the 650r

Haha, no it’s not the 630R, it’s a 570 HSE so it’s just got the diddy 5.7 Chevy engine in it!

pwood999 · Jan 18, 2020

Sherp,
Read this http://paulp38a.com/range-rover-p38/eas-valve-block-renew/ from start to finish several times. It will really help you understand the valve block.

Pete

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