ok well it turns out i was wrong lol.. apparently my a/c compressor clutch is what's causing the problem. would explain why my a/c stopped working about 2 months ago. i hardly use it so it didn't bother me.

the other day we had sprayed a bit of WD40 in the centre of each pulley to see if it was one of them causing the problem. it actually helped when we sprayed the crank pulley, hence why we thought it was that. but ASG assure me it's the compressor clutch.

so oh well, a/c isn't important, it can wait thanks for the input guys