EAS Strikes back! Suspension woes...

**senrta** · 25th August 2011, 09:16 PM

Hi Guys,

It's been a while between drinks; and well... even longer for my MY99, now marooned since April. After a compressor and valve block rebuild, I just haven't been able to get her to rise. (and no AMI!).

I've had to rely on my old Laser as a daily whilst I wait for the weather and some time off work.

Basically I began noticing the compressor running too long and had a few 'pressure signal constantly high' soft faults. I pulled down the compressor adding a new seals and then rebuilt the valve block with the orange diaphram. Thanks to Paul of Hard Range for the parts. Using Storey's EAS Unlock and running the pump for around 20 mins; all that displayed was entry level height, with standard flashing.

After confirming no movement or errors; I sprayed soapy water over the valve block. I found one of my solenoid housings had cracked and bubbles from 2 others.

I pulled everything down again and discovered 3 pinched stem seals and a duplicated exhaust valve solenoid seal. I changed the solenoid cover, the compressor piston sleeve and pressure switch at this point.

Well after fixing up, thanks to Paul once again for spares; the EAS still isn't happy. I've run the system using Storey's Unlock for another 20 mins with a door open, closed and still no lift. The dash displays all doors are shut and the standard ride height flashes and that is it.

I checked the fuses F17 and 44 and swapped the EAS relay. I pulled the EAS relay (under pass seat) and connected an air compressor to #5 on the valve block and manually raised 3 sides using Unlock, the right rear didn't change.

Noting that I'm going to pull down the right rear solenoid. If anyone can provide some advice, pointers; tips and so on please post, I'll be extremely thankful as obviously I've missed something!! Is there a pinout/diagram for the solenoid harness in case I've mixed one up?

**PaulP38a** · 25th August 2011, 10:42 PM

Hi Sentra

This diagram might help with the wiring and pin-out

you've probably already seen this one at my project/instructions page

In your e-mail to me this evening you mentioned that port 11 is blowing off constantly. As you can see from the diagram above, this indicates that the diaphragm itself is passing, and/or the diaphragm valve is passing. Did you replace the spring when you put the orange disc in? I've forgotten to do this a couple of times myself, and didn't realise until I saw the leftover spring on the bench

Try operating the compressor with the air lines to the springs disconnected at the valve block. Operate each solenoid with EAS Unlock and check the pressure out of the valve block. It should be similar for each corner. If not, work your back to the offending solenoid.

If you have inadvertently swapped solenoid positions (i've done that too!) one corner of the car will lift normally and the opposite corner (front or rear) on the same side will lift dramatically!

If the inlet and exhaust solenoids were swapped?... I guess the pump would work really hard and air would be getting blown out through the diaphragm valve to port 11... maybe worth checking this too.

Cheers, Paul.

**PaulP38a** · 25th August 2011, 10:51 PM

also check that you have the plungers in the correct locations...

This is the one for the Diaphragm Valve

This one for the Inlet Valve and Exhaust Valves

and this one for the valves going to the air springs

**senrta** · 25th August 2011, 11:31 PM

Hi Paul, thanks for the photos - will def help when I pull it down again!

I've been sifting through dozens of pages. My EAS valve or port 11 is venting when the air compressor is on.. this is apparently the Exhaust/Silencer bypass or blow off valve. This would possibly indicate a problem with 1 of the non-return valves or diaphram?

Oh, yes the spring is definitely installed with the diaphragm though I did read it may be useful to stretch it out a little to ensure it remains 'springy.'

The exhaust valve solenoid is slightly different to the others - I know that one is where it should be... have you ever had to change the solenoid to valve block screws - the small flat head variety? I don't think I've got too much life left in 'em.

Time for another drink!!

**adm333** · 28th August 2011, 10:29 AM

If I were you, I would put in bypass valves and leave it pumped at ride height until you figure out the problem.

At least then you can still drive it.

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