BIGVIC23

iTrader: (1)

THE STORY:
Wassup yall, i gotta 2002 is300 w/ 75k miles. I live in san francisco so the a/c doesnt get used a lot, but the past few days has been extremely hot for some reason. ok i hope in my car and the temperature gauge says 93, so i turn on my a/c and start drivin w/ the windows down. After the 10 mins i expect the a/c to get cooler, but of course not. then 20............30.........40 mins go by and i feel like im dyin. so i turn of the a/c......................

THE PROBLEM:
i noticed a little whistle behind the dash that is only present when i press the a/c button, what the hell is that? im a junior mechanic and i am scratchin my head HARD. Can somebody help me? I really need it, thanks

nthach

If it's a whistle accompanied by a chemical/oily smell, you got a leak in the system. R134a has a sweet/petroleum like smell to it. Did you notice a RPM jump as the compressor clutch was disenaging?

Tammy

I would suggest having the system pressures checked by a good A/C repair shop in your area. Your freon charge may be a little low, needing an add without over charging. They have the equipment to check for leaks and bring your system back to normal...

BIGVIC23

iTrader: (1)

i didnt really notice an oily smell, nore did i notice a jump in the rpm, but it still might be the problem. how would i go about fixing that?

BIGVIC23

iTrader: (1)

Can somebody else tell me what else it is or is that it?

nthach

the jump in the RPM means the compressor clutch was either engaging or disengaging.