A/C Hissing

[PM80]

My A/C started making that hissing nosie that it makes at start up constentily and it is not cooling. Any thoughts from anybody on this?

Thanks for the help

 

[Fla02LS]

The hissing sound is usually a telltale sign that its either low on freon due to a leak or just normal loss. Make sure your compressor is turning on when you turn the a/c on, should hear a click under the hood. If you're too low on freon the compressor wont turn which gets you no cold air.

 

[Eric0508]

mine kind of hisses too, but ive always thought it sounded like the a/c belt squealing. Maybe i'll take a look at the pressure.

 

[XTheOwl]

I have the exact same thing (01, 90k miles). Sounds like a steam pipe. Do those rechargers you can get at autozone do any good?

 

[PM80]

It was low on gas. Just put a littl in there and it went away and it started blowing cold again. I must have a small leak because I had the compressor changed 2 years ago.