Another EAS Question

[flyboy]

Hi everyone,
recently I’ve been spending a lot of time trying to get my deceased fathers 1998 P38 4.6 back on the road. It’s been parked in the garage for the last few years after the air suspension died. I managed to have it reset and it was working well, but would sometimes randomly go into off road height. I rebuilt the valve block, and again it worked well for a few days, did the same random height changes until it triggered a hard fault and was on the stops. I then put Schroder valves on each corner line and have been driving like that for a while.
i tried to get EASUnlock working, but all I could get was 28 and 80 in the RX field and it would never sync. I tried all the solutions via google, and then gave up, deciding it was my laptop. I’ve now used my desktop and got the same result. I then went back to the laptop, and whilst the 28 and 80 were streaming, I unplugged the delay relay and replugged it and finally got FF and a “Good Idle”. Fault read shows FR sensor not working. When I try to get the height values, it instantly loses sync and goes back to 28/80 and the only way I get it to resync is by unplugging/plugging in the delay relay.
i can’t seem to reset it with EAS unlock, but I do have a EAS kicker Lite that will reset it, but the fault comes back with a hard fault after I try and operate it.

does anyone have any advice or expertise on the way forward?
ive cleaned all connections, there are no leaks when it’s pumped up with schrader valves.
is it simply a new front right sensor required? That doesn’t explain the losing sync though with EASunlock every time the system operates a power cycle...

thanks in advance....starting to tear my hair out!


Marcus

[Saulman1010]

Hi,
My Rosie does the "but would sometimes randomly go into off road height" thing.
I also get a "vehicle had moved" error when clearing error.
I believe its an abs sensor error - loose or failing and which one I cant say.
Don't belive its a valve block or driver problem.

MJS

[flyboy]

Thanks MJS.
There’s definitely something wrong with the suspension. At one point, just before it sank to the bump stops, the front went right down and I felt like I was in a wheelbarrow. Another time it went down on the right side only [emoji51].
Both times it had been working well. So my guess is either the driver or sensor. The issue with connecting to EASunlock has made me think there might be some other electrical gremlin? I might try swapping the front sensors first. I just need to wait until the rain stops.

[Saulman1010]

Marcus,

I belive the programming of the EAS is that if the car is high grounded, the EAS fully extends for traction. This only works under 40kph. So if u have a bad ABS sensor it indicates to the contoler of extreme wheel slip in regards to the others and that triggers the self raising. Thats the theory.
Haven't tracked down mine yet.

I discussed a faulty height sensor triggering the same self raising but the brains trust on line think not.

MJS

[Saulman1010]

Also, just to eliminate something else, trace the earth for the EAS driver[emoji848]
MJS

[Scouse]

I think you're going to have to look at what's happening 'live' when it drops a corner. Also, check the driver for any signs of overheating, usually visible as a discoloured area in the resin.

[flyboy]

Update....
I reread the fault code “FR signal incorrect”.
Have swapped the front sensors left to right and cleared fault. Everything seems to be working properly again with no need for calibration. I’ve been here before though, so will report back in a week or so if all is still fine.

I am still having an issue with connecting my computer though, and can only get a good idle after unplugging and plugging the delay relay. I can then read faults and turn pump on, but can’t seem to clear faults with it. If I try and get height values, it instantly loses sync and I can only get it back by recycling the delay relay. Any ideas on that one? I’m considering replacing the delay relay to see if that makes a difference...

[Scouse]

Check the diagnostic port for corrosion. Water leaks from the N/S can enter from above.
Check the O/S A pillar too - there's a connector there that feeds the diagnostic port. Water from the O/S can run down the harness & into the connector.

[Saulman1010]

Check the diagnostic port for corrosion. Water leaks from the N/S can enter from above.
Check the O/S A pillar too - there's a connector there that feeds the diagnostic port. Water from the O/S can run down the harness & into the connector.I was just going to suggest that!!
I had the same issue on Rosie. I flooded it with electrical cleaner.
MJS

[flyboy]

Yep, thanks...have checked the white connections behind the A pillar and the OBD port...all looked good. Still the same...

On a positive note though, my EAS seems to be physically functioning perfectly. In which case the front sensor was the cause of all the random things it was doing. Will confirm still all ok after a bit more testing.