Now i don't even hear the compressor on start-up with a lot of objects in the trunk? Compressor or the sensors the shocks are good no leaks what could it be? Where are the sensors located? does it look like its sagging a lot remind you im on a slight incline
Mine sits low in the rear too and my RPO code is FE3 with magride. Is this normal for it to sit that low in the rear? (sorry for hijacking your thread)
Mine sits low in the rear too and my RPO code is FE3 with magride. Is this normal for it to sit that low in the rear? (sorry for hijacking your thread)
Mine sits low in the rear too and my RPO code is FE3 with magride. Is this normal for it to sit that low in the rear? (sorry for hijacking your thread)
MRC is a suspension control system, no leveling involved.
ALC/ELC uses rear shocks with auxiliary air bladders, height sensor(s) and a controlled compressor to compensate for extra weight in the trunk or rear seat. It is NOT "air ride".
Google "lord delphi magnetic ride control system".
I agree with E ...
what are the tire sizes on front and rear?
anything in the trunk?
has anyone replaced any suspension components?
proper tire pressure?
Alright tomorrow I'm gonna empty my trunk out and drive it around and measure it afterwards.
Oh btw, sometimes I can hear the air compressor turn on for about 2 seconds and then turn off and the car's ride height won't budge.
I hate to say this, but floor-to-fenderwell measurements have absolutely NOTHING to do with ride height measurements. Two different tires or even different tire inflation pressures (on different cars) can throw that measurement off by as much as 0.5" or more.
Suspension heights are measured using a specific set of specs from the service manuals - it's related to the geometry of the lower suspension arms, and there is a specific set of loads that are used when doing the measurements.
ELC compressors (systems) do a prove-out shortly after Key:ON - you'll never see a height change during that sequence.
Turn the Key:ON and let the ERC do its preload. Pop the trunk - 3 of you hop onto the open trunk lip. ELC should level the rear. All hop off - you should hear air escaping in the RR wheelwell as the system again levels the rear.
The only time I've heard my compressor, and I was listening for it, was when I put 12 cubic feet of mulch in the trunk (in bags) with another two 40 lb. bags of fertilizer stuffed in there.
I agree. The only time I heard mine was a bit before it failed; over-running due to that approaching failure. I was bending over, putting a walker in the trunk for a passenger. It's not at all like my old Roadmaster that growled!
Well I drove around with pretty much an empty trunk and the rear of my car is still sitting low. I did sit in the trunk and I heard the compressor turn on and the car lifted about a quarter of an inch, but it's still sitting 27.5 in the rear.
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