ranger1942
Member
Anyone know what pressure the P38 Air suspension pump should operate at. Tested mine and its only going up to 10lb , got a feeling i read somewhere should push out 150lb.
brianp38dse
Well-Known Member
Sounds like it need a new seal kit put in, easy job.
You're in the right ball-park. There's a thread on here where 2 senior members politely discuss the exact cut-out point but it IIRC is somewhere above 115psi!
If you fit a pressure gauge to compressor, a good one should hit around 175 PSI in a few seconds. Refurb the compressor if you only get 10 PSI, it is really ready for it. New piston seal and cylinder. New exhaust O'ring stuck in place with silicone sealant. Reset inlet and exhaust valves as my "How to". Good luck with it. Cut out point is 140 PSI plus or minus 7 PSI.
ranger1942
Member
Thanks for the info lads. I made up a guage, only 10lb showing , so have to put my hand in my pocket now, LOL
ranger1942
Member
Hi fellas, just had a new compressor , fitted it, vehicle wouldnt raise, took it off, connected the guage, shows 7 lb ???? Now i'm stumped, have i got a faulty new compressor, or should the air pressure be checked at the tank ???. Tempted to fit a schrader kit to it !!!!
Bladerunner919
Active Member
When you say a new compressor, do you mean brand new or just an alternative one? Why not just rebuild the one you have? I bought a kit that does the compressor and valve block for about £50.
As i said earlier compressor should give around 175 PSI. Would say providing the inlet reed is sound the exhaust reed is not seating on it's O'ring in your new compressor.
ranger1942
Member
Brand new compressor,sent it back now. Taken the easy route now, connected air bags to T pieces, , 1 schrader valve and pumped it up with the air line. Straight up like a good un. Going to remove valve block, fit a small compressor in there, T piece so i can pump tyres up , and raise suspension, Line inside the car, with tap to let air out when i want to lower it. Switch to operate compressor. Get rid of all the electronics .
Another EAS bodge up for the sake of half an hours work. You can't make it up.
Bladerunner919
Active Member
How are you going to ensure that the four corners of the car maintain a similar height/airbag pressure? Or are you going to just drive it around and deal with unpredictable handling as it arises? And make sure you inform your insurance company that you've compromised the suspension on your car, because they sure as hell won't pay out if you have an accident that they can attribute to your modifications. Which will be any accident you have.
Datatek
Well-Known Member
Not to put too fine a point on it, that is plain fecking stupid
The electronics are reliable, as is the rest with a little maintenance. compressor has probably failed due to leaking airbags so it is unlikely to stay level with your arrangement.
Druim
Well-Known Member
Don't:rolly::emps1:
tomcat59alan
Well-Known Member
You sure the gauge was reading correct? Sounds like a very bad plan to me, for all the reasons listed in the above posts.
JamesBB
Active Member
Agreed, there are so many that are not properly fixed and devalued by coils and manual pump up kits. The cost of fixing it properly is (in the long term) cheap in comparison to any other option.
