R32 Gtst Aircon Troubles

[barnoon]

Hey guys, first of all im sorry for starting yet another aircon thread in here but I didnt want to hi jack the other 2 threads, ive also done a search and havent found out too much more.

Ive been getting a funny rattling noise coming from my air conditioning compresser in my 93 model R32 GTST when the aircon is on, it does this noise about 90% of the time and on some rare occasions it will go away for 5 minutes or so, the air is still coming out quite nice and cold inside the car.

The noise seems to be the loudest towards the back of the compressor, I noticed today tho that it only seems to do this noise when the car is on idle (idles around 900 - 1000rpm with the aircon on) and if I use my foot to hold the accelerator down at about 1100 - 1200rpm the noise goes away completely, does this sound like the compressor is stuffed or is my car just idling too low when the air cons on? (I was thinking that because I have a Power FC that this might be making the car idle too low or something when the aircons on)

Any feedback appreciated and I hope I dont have to have the compressor rebuilt at a cost of 1k+ I just cant afford that at the moment

Edited November 12, 2006 by Dave69001

[barnoon]

Bump.

Ive adjusted my idle screw so my car idles higher and the air con compressor doesnt make any noise at all now but the car idles too high so ill have to put it back down does anyone have any ideas why the compressor is silent with revs above 1100rpm but below is noisy and rattly as hell ?

[Godzilla32]

If you have isolated the compressor to be the cause of the problem, id say it could probably be the bearings in it. My advice would be to remove it (make sure you plug up all lines/connections) and take it to a auto aircon place to get serviced.

PS: After you remove it just try to spin it over and see what kind of feel you get from it. Make sure you spin the centre and not just the outer pulley. It should feel nice and smooth to rotate.