P38 eas dropping in an hour

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
B

Blobthebuilder

Active Member
Posts
202
Location
Scotland
[GALLERY=][/GALLERY]I've been having ongoing issue with suspension dropping, I've renewed all valve block seals and pump and its improved the car taking 15 mins to rise to less than a minute but within 30 mins rear drivers side is starting to go down to below access hight which then pulls down front drivers side then rear passengers side but front passengers seem to remain up and upon checking erlier I noticed following pictures at rear drivers side, the bump stop is 80% missing and exhaust is about ready to snap off behind wheel so I'm wondering if the heat from exhaust leaking could have caused slight damage to air bag causing it to drop and start downward cycle of pulling rest of suspension down with it..
I have checked all front connections and pipes into bags and no leaks and I've removed relay under seat to stop it self leveling and it still went down the same also I have checked with finger over exhaust port for leaking solenoids or nrv and no air coming out so I'm suspecting leaking rear back, it looks perished at bottom so I sprayed solution on drivers side and no obvious bubbles TIA
IMG_20200229_101443.jpg
IMG_20200229_101314.jpg
 
Cannot now bud it refuses to rise if I remove exhaust filter and put figure over hole with engine on and door open air comes out but door shut there is no air I did put vaseline around pipes when I pushed them in and wonder if a bit has got drawn it and blocked something?
 
Blobthebuilder said:
Cannot now bud it refuses to rise if I remove exhaust filter and put figure over hole with engine on and door open air comes out but door shut there is no air I did put vaseline around pipes when I pushed them in and wonder if a bit has got drawn it and blocked something?
Click to expand...

Sounds like diaphragm is leaking. You need to do a check on things you have done. Vaselin should not be a problem. Compressor is very low volume so with door open air will be forced past the leaking diaphragm. With door shut whatever air you have will be going straight out through the leak.
 
wammers said:
Sounds like diaphragm is leaking. You need to do a check on things you have done. Vaselin should not be a problem. Compressor is very low volume so with door open air will be forced past the leaking diaphragm. With door shut whatever air you have will be going straight out through the leak.
Click to expand...
Everything was new yesterday and was working fine, then I removed 4m pipe to remove exhaust to see if it was leaking then put vaseline round pipe and was some over end which I thought I sorted then it was getting slower to rise now it doesn't, pump runs but as I said no air or suction from. 4mm pipe hole and door open air from exhaust with engine running door shut no air
 
If just one corner is going down with the relay out, there is a leak. Any sign of perishing on the airbag and it's time to replace along with that exhaust. The EAS pipes run along the top of the left hand side chassis member and leaks caused by a blown exhaust can be a problem
 
Datatek said:
If just one corner is going down with the relay out, there is a leak. Any sign of perishing on the airbag and it's time to replace along with that exhaust. The EAS pipes run along the top of the left hand side chassis member and leaks caused by a blown exhaust can be a problem
Click to expand...
OK bud when I get the other problem solved I'll look into that
 
Blobthebuilder said:
Everything was new yesterday and was working fine, then I removed 4m pipe to remove exhaust to see if it was leaking then put vaseline round pipe and was some over end which I thought I sorted then it was getting slower to rise now it doesn't, pump runs but as I said no air or suction from. 4mm pipe hole and door open air from exhaust with engine running door shut no air
Click to expand...

When the compressor is running the diaphragm solenoid is active and directs air below the diaphragm to seal the outlet. The small 4 mm pipe is the exhaust into the harness when the compressor stops the diaphram solenoid drops out and pressure from below the diaphragm is released.
 
Last edited:
It wouldn't rise yesterday after I refitted the valve block but when I fitted that pipe it instantly rose up so I thought it sucked in through that pipe
 
Blobthebuilder said:
It wouldn't rise yesterday after I refitted the valve block but when I fitted that pipe it instantly rose up so I thought it sucked in through that pipe
Click to expand...
It has to fill the tank after fitting a new valve block which takes time, if it rose after fitting the pipe it was just coincidence. The 4mm pipe is, as Wammers said, an exhaust.
 
OK I checked valve block there was a o ring missing on top of square box with silver plunger for inlet valve and 2 o rings in same place on front right valve
 
OK update after checking everything on valve block again took 3 hours to be sure I refitted this morning but left 4mm pipe off because I could see vaseline up it started car door open and went for a cuppa 10 mins later hot in car and 30-40 seconds it was at normal height with normal height setting selected on dash so there was 2 top orings on square block in front right valve and it was missing from inlet valve so just waiting now to see if it drops again
 
You must log in or register to reply here.

Similar threads

Flossie
P38A Eas issues
2
Replies
22
Views
1K
Datatek
Datatek
adyw
Rear suspension Sag
Replies
11
Views
743
adyw
adyw
J
P38A p38 EAS - immediate drop of pressure
Replies
11
Views
718
Mark Piercy
Mark Piercy
K
Is my RR Classic in EAS shutdown?
Replies
12
Views
987
kevleaper
K
A
Air suspension problems
2
Replies
30
Views
3K
Alec1943
A
Back
Top