Sorry for the shaky video. But here are videos of me crawling over a bump in my lawn and monitoring the air pressure.
***i DID remove the lift rods this morning. This is stock standard height in normal mode. ***
- 0-15 seconds compressor is running to charge reservoir to 255psi. it then exhausts out the head pressure down to 23~psi.
- 33 second mark - i drive over the 3" CURB going off the driveway, onto the grass.
- 34-42 seconds i crawl over the curb, and then the front of the truck goes down a little dip
- 42-0:55 approx, i begin to climb up sidehill, and drive along the side hill (grass bump i show earlier in the video).
- :55-1:08 approx i come off the sidehill, and ground starts to level off
- 1:08-end - im back on flat ground sitting still. you can see reservoir pressure over the 40ft drive has dropped from 255 to 220 approx, and its building up again. pressure then drops down to 30-100 range several times, when car is levelling itsself, exhausting air out, when its done the compressor starts running again to keep building reservoir pressure. again this whole time im sitting still, the car is just doing its thing im not driving anywhere.
- another video of me driving the same route, you can see pressures jumping all over as suspension articulates, exhausts out, compressor runs to rebuild, etc.
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when i repeated the drive several times with the fuse pulled there was absolutely ZERO change in pressure. it held 21psi aka valves are all working, sealing, and there are no leaks. This reconfirms to me the valves are working **as they are told to** (i think they are being told to do things when they shouldn't be) - and there are no system leaks. When powered/active, the EAS is acting up and consuming air as you can see in the video. Im yet to hear from anyone or find anywhere online an explanation of when air should be consumed/exhausted, other than lifting and raising the vehicle to different heights. to my knowledge, once at a new ride height the front and rear ends a should be isolated. This isnt happening, air is being leaked out and pumped back in as evident from the rapidly changing pressures in the video,and this is only a 40ft long drive on grass in my lawn. Again, this doesn't happen when the fuse is pulled meaning electronics are making this happen, and all i can assume is its doing this incorrectly... so my new theory/suspected issues are:
1) compressor / eas software (will know this when my gap tool arrives - on order)
2) faulty height sensor(s) - but no error codes or crazy sensor readings as of now monitored with 4dcan. I will be able to monitor voltages when gap tool arrives to confirm they are working & reading within their limits.
3) eas hardware/computer is defective or faulty all together
4) broken wire(s) causing valves to open/close when not being told to -i will be able to monitor front and rear valves with gap tool, to see if they are being told to open or close. if air is being lost when they are showing closed, i can assume the valve blocks are receiving an electrical charge causing them to open that's NOT coming from the computer - because when they are closed aka. fuse is pulled they work. if front or back can be isolated to cause the problems i can start tracking down why. if its front AND back i suspect hardware or software will be the reason.
Does this seem logical? again, this is based on my understanding of the eas system and when it should be exhausting or pressurizing air from the front and rear ends - of which i have not read anything official about...
