Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: amba on 28 June 2011, 10:43:50
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Must be contagious as others have posted similar problems ,and think my Elite has also caught the "bug".
Back of car now sits noticably higher than few days ago.
New genuine gm rear air shocks /kyb self levelling springs fitted to rear about 2-3 months ago.Car sat around 665mm ground to wheel arch.Now sits around 700mm.
Compressor cuts in when ignition first switched on and runs for a short while then stops so all working at the pump end.I have just pulled of the air valve to o/s shock with ignition off and escape of pressure air from shock and back end sits back to around 645/650mm.Air valve reconnected to shock-ignition turned on and pump fires up and raises car to around 665 mm.Short drive around block and parked back on driveway and rear end is now back to 700/705mm.
Any ideas guys ?
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Hmmm. Over such a short period I would think the sensor is not reading correctly.
Ime these are a toss up between sensor or pump not releasing air over time/several starts as the system sets it self each turn of the key.
Wonder if playing with the sensor arm at higher levels might produce a range that works and might make the pump audibly release air. It can be heard when it drops from topped out if it's quiet.
Sensor will most likely fail in it's most used position/ride hight, but may still work above that.
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Thanks for input,Chris.
It is almost like the system will not reset its self and every new start it pushes in more air. I have driven car today over 100 miles and made several stops with complete ignition turn off.
Returned home tonight and measured ground to underside of rear arch after leaving car stood for over an hour to adjust and it is still easuring at over 700mm.
Disconnected air line from n/s shock and massive escape of air under pressure..car now dropped down to 665mm.Air line rconnected and turned on ignition .Heard pump kick in and run for only a few seconds and no nitcable movement off rear end so rechecked measurments and still at 665mm.Again pulled off air line and again air escaped so think its safe to say pump is working and pushing air into system but almost like it is over inflatting the shocks over a period of time.
Would it just be safer and probably quicker to remove existing level sensor and try another as the 2 main parts..shocks /springs are new..pump is pushing air into units ...or could it be a fault with the system not releasing air.
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Have you pushed sensor arm to it`s max to extend the shockers then moved it the opposite way to it`s end of travel and checked the height
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RobG..no I haven,t tried that yet as been raining like it ment it today,but will give that a go in the morning.
I assume if it pushes the shocks full extended when the lever is moved to its full up position and the reverse the other way,that would then indicate the level sensor is functioning correctly,but if it does where do I start loooking then ?..just want to be clear what I need to do to correct the fault.
How does the system depressurize when the ignition is turned off...could that be blocked ?? if it is an air valve or similar.
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IIRC the pump vents a certain volume of air dependent on sensor arm position
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Will tyr as suggested in the morning with the level sensor arm.Perhaps sensor has given up the ghost as did run the suspension for a few months with a knackered o/s shock so maybe it was pushing air in via sensor position and then just leaking out as quick.
Not sure if that would have now caused sensor to start playing up.
Will expect to be on the look out for a new level sensor shortly then .
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Got a known good pump and sensor if needed
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Not sure that I would really need the pump as is it not a matter of ..they work or they don,t work ?? also aren,t they different across the range/years or is it just the electrical plug.
Drop me a pm with details on the sensor though please as am thinking that may be the most likely culprit,and would be usefull to have a replacement in "the wings" should it prove faulty when I check in morning.
Thanks RobG
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PM sent
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As said I would try to establish if the pump releases air by moving the sensor arm.
Move arm fully up. Let it pump up the car and stop. Turn engine off. Drop the level arm and move quickly to drivers front wing and listen. Should hear an audible pshhhh. And the car should drop of course.
If it does release air at any point I'd suspect the sensor.
I believe in most cases, it's the pump not releasing air, but needs proving one way or the other. Which may be difficult.