Thread: EAS compressor continuously running

The compressor running can almost certainly only be a sticking relay or a fault in the EAS computer. There is a pressure switch on the valve block that should cut out the compressor so the only reason for it to continue to run is when the signal does not reach the control unit or is otherwise broken.

The dead battery will probably be because of the running of the compressor I would reckon.

I would suspect the EAS computer if you can not open or close valves, strange rises occur and compressors run without need. Can you read current value's when the system goes haywire? ie, ride height sensors etc. are displaying realtime values? That would suggest that the computer is in itself at least communicating and reading value's.

-P

Only this last time I have been able to get the nanocom on when it was going haywire.

I couldn't open any valves, and they were all closed except both rears (or fronts - cant remember) kept jumping between "open" and "closed" - this change would occur maybe twice a second.

Only fault was all sensors went out of range.. I believe the nanocom was happy talking to the EAS computer, but when it sent commands the car didn't do what the nanocom said it did.

My 96 hse had a problem with the compressor running constantly, and the culprit was the blue pipe where it leaves the compressor. It had a tiny crack in it right against the fitting and after replacement it now works perfectly.

John

When it was running constantly John, was the car getting extremely high? I've just had a look and all hoses for EAS look to be in good condition.

No, the leak must have been sufficient for that not to happen.

The compressor would run 98 percent of the time but shut off occasionly for a few seconds.

The suspension was otherwise fine with the height sensors stopping it trying to take it too high.
Once the blue hose was replaced it is now fine.

John

G'day Dan,
I would try swapping out your EAS ECU for a known good one to see if that fixes problem. To me it sounds likely that is your problem.
more than happy to assist if your over this way sometime.
Good luck,
Martin

Hey Dan,
It may also be worth your while getting a compressor pump kit i.e. sleeve, o'rings, seals etc as you're pump has been running constantly.
The kit is not expensive nor hard to fit but will revitalize your pump once you get other issue sorted.

Thanks for the very kind offer Marty!

Im actually living up Broken Hill way now so not sure when I'll have the car down that way! It hasn't done it since I've swapped relays around, but it has been a very, very intermittent fault. I think I'll continue the hunt if it plays up again!

Very good point with the pump kit, that had slipped my mind! Can you recommend any reputable places to purchase one from?

Dan