My air compressor is very old and has been ‘rebuilt’ a number of times but has now become noisy particularly for the last 20 seconds or so before cut off when, I assume, the back pressure is high and working the bearings etc quite hard. I have just rebuilt the valve block and there are no leaks in the system - it will not drop at all if left on any height setting when parked up for days. It rise and falls as expected when running, does not ‘dance’ when at a standstill, levels it self when parked and holds station nicely. NanoCom reports no faults and all height sensor readings appear OK.
However, due to the compressor being noisy I have become aware of when it operates and shuts off in normal driving and when travelling at a constant height i.e. when not having to transit between ‘normal’ and ‘motorway’ modes, the compressor operates regularly (every one or two minutes) for very short periods of time for between 10 & 20 seconds as if it is just topping up a very small drop in tank pressure. Is this normal behaviour/duty cycle?
I have managed to acquire a GROM BT-3 unit but understand that it needs a RVRN2 cable to work with the Alpine HU of a 2001 Vogue. GROM do not seem to do this cable anymore! Therefore does anyone have the detail of this cable (connector pin to pin info) so I can make one up?