Salisbury Nick · Aug 19, 2022

Has any one experienced their EAS system letting out air in short farty bursts, a bit like the sound of air brakes, when driving normally?

kermit_rr · Aug 19, 2022

No, don't hear it over road/engine noise while driving.
Do you have a leak, maybe as an airbag flexes?

doriz · Aug 19, 2022

kermit_rr said:
No, don't hear it over road/engine noise while driving.
Do you have a leak, maybe as an airbag flexes?

Er hmmm, what road noise @kermit_rr yours in on house bricks iirc

Salisbury Nick · Aug 19, 2022

kermit_rr said:
No, don't hear it over road/engine noise while driving.
Do you have a leak, maybe as an airbag flexes?

air bags are new. Sounds like the valves letting air out. But ride height not changed, so there must also be some pressure being added.

kermit_rr · Aug 19, 2022

do you have a nanocom or similar? get a friend to watch the valve states while you drive?
the only noises I hear are click click click from the solenoids and a pfft pfft from the exhaust

Flossie · Aug 19, 2022

Bet the air exhaust silencer has felled orf or loose.

Flossie · Aug 19, 2022

kermit_rr said:
do you have a nanocom or similar? get a friend to watch the valve states while you drive?
the only noises I hear are click click click from the solenoids and a pfft pfft from the exhaust

The pfft pfft is yer headgaskets blowing

kermit_rr · Aug 19, 2022

Flossie said:
The pfft pfft is yer headgaskets blowing

yes and the click click is the liners going on holiday

Salisbury Nick · Aug 19, 2022

Well, the symptoms i described were the predecessor to a eas failure. Now down on the bump stops, pump runs and generates pressure but you can hear the pressurised air escaping loudly and the pressure is not getting to the air bags.

Datatek · Aug 19, 2022

Salisbury Nick said:
Well, the symptoms i described were the predecessor to a eas failure. Now down on the bump stops, pump runs and generates pressure but you can hear the pressurised air escaping loudly and the pressure is not getting to the air bags.

Diaphragm valve failure is the most likely culprit.

Mark Piercy · Aug 19, 2022

Ours adjusts à little on the bumpy road but will settle at motorway speeds. It does sound like the exhaust filter has popped off or opened. It can also do this if there is a conflict between height sensors and the ecus programmed heights. As said also a leak will cause the car to adjust to maintain its programmed heights.

Grrrrrr · Aug 20, 2022

Salisbury Nick said:
Has any one experienced their EAS system letting out air in short farty bursts, a bit like the sound of air brakes, when driving normally?

If you take the exhaust filter off then it sounds like a truck as it vents but it doesn't normally do that going along. Is the pressure switch in the valve block doing its job? Or is the compressor running all the time causing it to vent?

Salisbury Nick · Aug 28, 2022

Datatek said:
Diaphragm valve failure is the most likely culprit.

This would be one of the four valves on top of the valve block or is there another valve I need to check? How would you recommend I check for this fault?

Salisbury Nick · Aug 28, 2022

Flossie said:
Bet the air exhaust silencer has felled orf or loose.

Hi, sorry to be a pain, but how can I check for this?

Datatek · Aug 28, 2022

Salisbury Nick said:
This would be one of the four valves on top of the valve block or is there another valve I need to check? How would you recommend I check for this fault?

The diaphragm valve is internal to the block. At one end of the block there is a separate bit held by 4 screws. Take that off and you will see the valve a round disc. Pull it out and you may well find that it has split.

Flossie · Aug 28, 2022

Salisbury Nick said:
Hi, sorry to be a pain, but how can I check for this?

White plastic tube shaped thing, rear of the valve block if its still there. It silences the exhaust air.

Flossie · Aug 28, 2022

Datatek said:
The diaphragm valve is internal to the block. At one end of the block there is a separate bit held by 4 screws. Take that off and you will see the valve a round disc. Pull it out and you may well find that it has split.

Can you do that with the block insitu keith? Just curious.

Datatek · Aug 28, 2022

Flossie said:
Can you do that with the block insitu keith? Just curious.

I doubt it

Salisbury Nick · Aug 28, 2022

Datatek said:
The diaphragm valve is internal to the block. At one end of the block there is a separate bit held by 4 screws. Take that off and you will see the valve a round disc. Pull it out and you may well find that it has split.

AWESOME. Thanks @Datatek

Salisbury Nick · Aug 28, 2022

Datatek said:
I doubt it

Ooh. That’s also very useful to know. Thanks @Flossie and @Datatek

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