What is this a/c squeal from my 3000gt?

Question

My a/c squeals extremely loud when i idle my car and take off. After i drive a few seconds it dissappears but puts a strain on the engine the whole time that is noticable. It has been doing this for over a year! No blown belts or anything and they are newer belts. The guide pulley was replaced and the squeal remained. Is it possible to add oil to the r134 refrigerant? Could it be that the compressor is low on oil? The a/c is freezing cold. would the belt being too tight or loose cause the squeal until a few seconds and then it grips? Why does the noise disapper after a few seconds? Mechanics or those with experience only please.....

Answer 1

it could be your belt or the ac clutch is going bad.

Answer 2

If the Belt is tight, then it most likely is that the A/C clutch is Slipping causing the Squeal. With the hood open, the A/C on , car in park, if you rev the engine while watching the A/C compressor, you will probabl;y see sparks. If you do, the A/C clutch and or Compressor need to be replaced.

Answer 3

The only time a belt squeals on a A/C is when it is loose. Hold the part of belt inbetween the two pulleys and you should be able to move the belt up no more than about an inch! good Luck!

Answer 4

the A/C clutch and or Compressor need to be replaced.
check the compresser bearings. i had a gto 3000 t/t 450 bhp 180 m.p.h at best my car got extrme squeals. ti was the 2 outer pulleys not cheap 4 gto,s yors ar the same as if you ar in the uk ther is a braker at duxford /old road charlton cars sorry but lost number ok good luck

Answer 5

yes u can add refridgerant oil. but check the compresser bearings. thats what it sounds like. may need new compressor