Air Con Hissing

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jacckk

jacckk

Active Member
Posts
321
Location
Durham, UK
I got the air conditioning recharged around July and it worked but gradually the effectiveness got worse so I obviously have a leak somewhere. I'm guessing condenser but I haven't gotten around to replacing it yet.

The air conditioning now still operates but I get a constant hissing sound when it's activated, pressing the AC OFF button stops the hissing immediately. It's went from intermittent hissing to constant hissing when the air conditioning is on.

Is this just because I have a leak and the refrigerant has gotten low or does that mean I have a problem with something else (expansion valve?) that I should also replace when I take a look at replacing the condenser.
 
One pipe is hot coming from the compressor is hot and one is cold. Don't have anything to measure the temperature properly if that's what you wanted me to do :(
 
jacckk said:
One pipe is hot coming from the compressor is hot and one is cold. Don't have anything to measure the temperature properly if that's what you wanted me to do :(
Click to expand...
That's OK, so sounds like you have a leak, do you hear it inside the car or outside?
You can get a hissing noise from the evaporator.
 
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