EAS Very slow to rise at first - then fine afterwards.

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

jimllshiftit

Active Member
Posts
235
Location
Warwickshire
Hi all,

A few weeks ago I fitted a replacement driver pack to the EAS on my P38 DT. This has cured the "pressure signal high" problem and stopped the car from standing at all sorts of strange angles. At the same time I fitted another pressure sensor as mine had been known to keep the pump running for far too long.

The day after fitting the above I drove a 300 mile round trip with no problems at all. I then left the car standing for about three days only to find it had lowered all four corners to the bump stops. It seemed to take ages to reinflate but raised and lowered itself with no problems after it had pumped up.

I sprayed the valve block connections with soapy water but found no evidence of leaks but I dont know how to check if the pressure sensor joint is leaking. Ive noticed that after leaving the car for a couple of days I can find it has lowered all four corners or sometimes just the rear end.

I didnt put any sealant on the pressure sensor joint when I fitted it. If that's necessary what should I use on the thread? What else should I be looking at to cure the problem?
 
Hi all,

A few weeks ago I fitted a replacement driver pack to the EAS on my P38 DT. This has cured the "pressure signal high" problem and stopped the car from standing at all sorts of strange angles. At the same time I fitted another pressure sensor as mine had been known to keep the pump running for far too long.

The day after fitting the above I drove a 300 mile round trip with no problems at all. I then left the car standing for about three days only to find it had lowered all four corners to the bump stops. It seemed to take ages to reinflate but raised and lowered itself with no problems after it had pumped up.

I sprayed the valve block connections with soapy water but found no evidence of leaks but I dont know how to check if the pressure sensor joint is leaking. Ive noticed that after leaving the car for a couple of days I can find it has lowered all four corners or sometimes just the rear end.

I didnt put any sealant on the pressure sensor joint when I fitted it. If that's necessary what should I use on the thread? What else should I be looking at to cure the problem?

As the driver pack has nothing at all to do with the compressor or pressure sensor, i think is is safe to assume the new pressure sensor cured the (pressure signal high) problem. Reason it is slow to rise is more than likely that you have a supply side leak. (The tank is depleting over night) Maybe coupled to tired compressor. A little Hylomar on the pressure sensor thread or even some PTFE tape would have been better than fitting it dry.
 
Cheers Wammers, Ill get some hylomar tomorrow and refit the pressure switch.

Please forgive my ignorance but by "supply side" do you mean anything on the same side of the valve block as the compressor?
 
Cheers Wammers, Ill get some hylomar tomorrow and refit the pressure switch.

Please forgive my ignorance but by "supply side" do you mean anything on the same side of the valve block as the compressor?


Treat the EAS as two seperate sides. Supply or storage side which is from back of NVR1 in block through Violet coded pipe to tank. That is where the compressed air is stored. If it leaks out overnight when you start up in the morning and the suspension has self levelled or maybe dropped a little. The EAS will open the inlet valve and the relivent corner valves (rears first)to bring it back up to standard. As there is no pressure or less pressure than there is in bags, in the tank, this cannot happen until tank is up to pressure. NRV2 stops the air from the bags leaking back into the empty tank and the car dropping to the bump stops. But if the compressor is weak or there is a slight leak on the diaphragm valve filling the tank can take some time.
 
Back
Top