More EAS issues!!

Afternoon all!! I know lots of other threads are similar to my problem but none seem to cover whats up with mine,

Firts off she would sit down overnight, sorted with new rear airbags. she now stays up all week.

i replaced the compressor seal, liner and o rings this afternoon,new inlet filter. seems to be working fine, raises from access height to standard in seconds. extended hieght takes about a minute or so, no idea if thats good or bad?

The issue i have is the pump seems to be running a lot, from starting it will run for about 30 seconds, turn off then restart running after about another 5 secs,and repeating, even without changing height settings. also the valve block is clicking a lot.

Possible valve block leak? Pressure switch? Sensor fault? ive not had any faults appear on switch.


Any thoughts you clever lot?

Thanks

jonesavpman said:

Afternoon all!! I know lots of other threads are similar to my problem but none seem to cover whats up with mine,

Firts off she would sit down overnight, sorted with new rear airbags. she now stays up all week.

i replaced the compressor seal, liner and o rings this afternoon,new inlet filter. seems to be working fine, raises from access height to standard in seconds. extended hieght takes about a minute or so, no idea if thats good or bad?

The issue i have is the pump seems to be running a lot, from starting it will run for about 30 seconds, turn off then restart running after about another 5 secs,and repeating, even without changing height settings. also the valve block is clicking a lot.

Possible valve block leak? Pressure switch? Sensor fault? ive not had any faults appear on switch.


Any thoughts you clever lot?

Thanks

Click to expand...

Have you replaced the front airbags?
If it stays up, you may have a leak on the storage side or the diaphragm may be shot, remove the exhaust silencer towards the rear of the EAS box with the pipes and check for air coming out.

Hi Datatek, Not replaced the front airbags yet,planned for end of the month. Im with you thinking leak on storage side because she dont lower over a week.

Am i talking rubbish that the compressor turns off at 140psi then restarts when it goes below 120psi? If so where does 20psi go in 5 seconds?

Thanks for your input.

jonesavpman said:

Hi Datatek, Not replaced the front airbags yet,planned for end of the month. Im with you thinking leak on storage side because she dont lower over a week.

Am i talking rubbish that the compressor turns off at 140psi then restarts when it goes below 120psi? If so where does 20psi go in 5 seconds?

Thanks for your input.

Click to expand...

That's what it SHOULD do.

There's a thread on here where a guy spliced an LED from the wire coming out of the EAS ECU under the passenger seat to see when it ran and it ran pretty much all the time. Datatek and Wammers told him to ignore it as it is normal and he would just worry himself. As far as I'm aware nothing came of it. Well documented here and elsewhere. Blamed on the long narrow path to the pressure switch.

I still worry about the same thing though! In the end I spliced a T piece and put a pressure gauge on my storage pipe (violet one coming out of valve block?). Anyway, my pump kicks in around 130psi and kicks off at 140. I replaced the pressure switch. No difference. My valve block has been rebuilt. The only part of my EAS I haven't replaced ro overhauled is the height sensors and main reservoir - and I know that's fine because my gauge barely moves if left standing for a few days - and still it kicks on as soon as I start her up!

Hi Grrrrrr, i was under the impression that the pump would only kick in after using air from the tank,ie raising the suspension.
im pretty sure the pump is operating pretty well, could be wrong. even before i changed the airbags and fitted the new seal to the compressor it went up from access quite quick(not having had a p38 before not sure how quick a new one went up!!) Just want to avoid having to replace compressor due to it burning out from un-needed use due to a sticking valve or dirty o ring!!

As it stands i think the pump is running too often,once a minute at idle, plus all the clicking from the valve block is disturbing!!

jonesavpman said:

Afternoon all!! I know lots of other threads are similar to my problem but none seem to cover whats up with mine,

Firts off she would sit down overnight, sorted with new rear airbags. she now stays up all week.

i replaced the compressor seal, liner and o rings this afternoon,new inlet filter. seems to be working fine, raises from access height to standard in seconds. extended hieght takes about a minute or so, no idea if thats good or bad?

The issue i have is the pump seems to be running a lot, from starting it will run for about 30 seconds, turn off then restart running after about another 5 secs,and repeating, even without changing height settings. also the valve block is clicking a lot.

Possible valve block leak? Pressure switch? Sensor fault? ive not had any faults appear on switch.


Any thoughts you clever lot?

Thanks

Click to expand...

Pressure switch is in a stupid location which causes some extra pump start/stop (IMO located in storage tank would have been better)

Check the whole system for leaks with soapy water or like, remember the hard to get to places such as under dryer, tank, bags, valve block and rear bags connections.

The system self level the suspension, make sure calibration is spot on, correct tyre pressure on flat level surface when calibrating.

Clean connections at height sensors and left front foot well behind kick panel.
Every time you come to a halt or near, the front axle equalises and air is lost, also air is lost when stationary when car equalises via timer function or opening/closing doors.
Also using air changing heights, speed related or manually.


Try running car with door open to fully pressurise storage and you should see pump doesn't run as often once up to pressure if you have a good working system.


I've renewed my system and pump doesn't run a lot and after a drive the pump isn't hot, just a little warmer than ambient air temperature, and pump cover doesn't have the many extra holes some owners have made.


I know how much pump is running as I've installed a pump on LED, on a typical drive it mostly runs after coming to a halt and when system change back to standard height on slowing down speed. Pump runs a little more when fully loaded

Mine after i calibrate the suspension is much better but driving around town with lots of stops still makes the pump run alot. Driving out of town the pump doesnt work unless i change hight.
As most of my drive is from home to work and back (1.5 miles each way) most of the time i have my suspension turned of as i mounted a switch in dashboard to turn on/off the suspension.

JotaPê;2985640 said:

Mine after i calibrate the suspension is much better but driving around town with lots of stops still makes the pump run alot. Driving out of town the pump doesnt work unless i change hight.
As most of my drive is from home to work and back (1.5 miles each way) most of the time i have my suspension turned of as i mounted a switch in dashboard to turn on/off the suspension.

Click to expand...

Can't see the point of the isolation switch as when you activate the switch the pump will work harder (longer period) to refill the stored air used whilst system is deactivated

I turn off all of the suspension not just the pump. It wont use any air at all.
I leave it off for more than a week and when i turn it on the pump works for 30 secs and then shuts. I guess no leaks in the suspension.
I turn it on after a week to keep the system working or i turn it on when i go out of the town.

jonesavpman said:

Hi Datatek, Not replaced the front airbags yet,planned for end of the month. Im with you thinking leak on storage side because she dont lower over a week.

Am i talking rubbish that the compressor turns off at 140psi then restarts when it goes below 120psi? If so where does 20psi go in 5 seconds?

Thanks for your input.

Click to expand...

Compressor cut in should be 104 to 116 psi (7.8 to 8 bar) cut out should be 138 to 152 psi (9.5 to 10.5 bar)
20psi will disappear in no time if there is a leak, have you checked for the diaphragm leaking yet?

JotaPê;2985731 said:

I turn off all of the suspension not just the pump. It wont use any air at all.
I leave it off for more than a week and when i turn it on the pump works for 30 secs and then shuts. I guess no leaks in the suspension.
I turn it on after a week to keep the system working or i turn it on when i go out of the town.

Click to expand...

Only really possible if you have no leaks


Suppose it's 1 less power user when stationary as well.


Must throw a message or fault on dash though

Datatek said:

Compressor cut in should be 104 to 116 psi (7.8 to 8 bar) cut out should be 138 to 152 psi (9.5 to 10.5 bar)
20psi will disappear in no time if there is a leak, have you checked for the diaphragm leaking yet?

Click to expand...

Not checked diaphragm yet,will do more checking on the weekend, too dark to mess about when i get in from work.

She's not our daily drive so she can wait.


thanks