Not the Usual Air Suspension Questions

[Hawk in WY]

Restoring 1994 LWB.

Replaced four bags (no leaks), four height sensors,, valve block and driver, eas ECU twice (two different part numbers depending on VIN number).

No fault codes.

Stuck at 28 inches at wheel arch until rear goes to 33 on its own.

Not responding to up/down buttons.

Only oddity is left rear sensor reads 148 when other three are in the 80's.

Planning to replace left rear sensor next.

Anything else I should be thinking about?

Thanks in advance.

[o2batsea]

Are you using Storey Wilson's ECU cracking software to read these values? In my experience you usually don't need to be replacing sensors unless they are bent or busted.
Can you manually pump up the corners via the jumper? If so, does it return to normal height after you plug in the ECU? Did you install a new or known-good white relay?

[Hawk in WY]

Fixed it.

New rear sensor.

[Hawk in WY]

Now have working air suspension.

Remaining glitch is cannot recalibrate low setting.

High and Standard recalibrate just fine.

Using EAS Kicker.

Is there a relay in the low setting circuit which might be bad?

Thanks in advance.