Hey guys!

Sorry for the delay but a mad couple of days with work etc.

Ok, update on this...

I listened very carefully again first in the boot for the air suspension compressor - zero noise there.

So listened from the rear side of the car next to rear wheel. Noted the noise is loudest under the car, and loudest on the right side (offside).

So next I listened inside around the rear seat area. Didn't hear too much, but there again the engine is pretty loud (4.8!)

So pulled the seat bench up and put my ear next to the fuel pump cover. I could hear the squealing through it for sure, but nowhere near as loud as it is outside the car (like 10x louder). But also I could hear what sounded like a slight clicking/grinding noise coming from there also. Quite faint, but definitely there.

It sounded like the ticking you get on the old manual kitchen timers but with a slight grind to it.

I didn't try the ground loop/check battery yet as a) the battery is a bugger to get to, and b) nothing else electrical is giving any issues at all, and c) I had limited time.

What do you think?