Time to put this puppy to bed.
I think you are on the money Graeme with your thought about getting enough air into the system to do things but not enough to keep the electronic geeks that live in the car happy.
Just put the compressor back in - same old story but this time the tank was full at the start - from onroad up to offroad no issues, down to access no issues, back up to onroad - hmmm dont like this will raise slowly but it got there and I could here the compressor stop - so up to full pressure. Now back up to off road - hmmm don't like this one little bit - up slowly - oops need a rest and will continue when I cool down - it is only 28 and the covers are not on the compressor. BUT - he gets there after a little rest - offroad height, compressor off and no faults so pressure must be there.
So back to onroad and off for a drive - 10km before gong - stopped a few times and some compressor running and sometimes not - all normal.
So it seems it can handle the ups and downs with just a little trouble when stopped but when driving cannot cope - I guess the constant level adjustment as you drive - along the lines as you suggested Graeme the compressor cannot keep the tank topped up quick enough for the car's electronic geeks.
I wasn't expecting the cooling issue today as I did not have it yesterday when it was the hottest January day in Canberra's history (42) and the covers were on. No covers today and needs to cool only after one lift.
So I need to decide what compressor to get - am leaning towards the AMK Type kit as I need the entire change over kit to fit the AMK. If the AMK Type compressor turns out to be a dud, a genuine AMK compressor without the rest of the kit is priced OK overseas (the same as a Dunlop).
Thanks for all the input - has been great.
Garry


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