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hard on equipment
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2,104 Posts
Discussion Starter #1
For my A/C to make a hissing noise? It's not audible while on the road (because of road noise), but it makes the sound whenever the engine is running and the A/C is on. Do I need to get my A/C looked at?
 

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Traded in Alti!!!
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406 Posts
victor said:
mine does it when I shut down... its just the air pressure being released
same here
 

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hard on equipment
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2,104 Posts
Discussion Starter #4
Yeah, I know it does it when you turn it off. Here's the thing - I almost never use my A/C (yes, I know we live in Florida). So when I started using it the last couple months or so, to be honest I couldn't remember if that hiss was always there. But it makes the hiss while the air's still running. That's what I'm worried about.
 

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Formerly LordofSearchMod
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18,041 Posts
well then I'd say go get a leak test on it.. who knows, there could be a whole and the hiss is a leak...
 

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projected member
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919 Posts
if it is a hole, the a/c would've stopped working 2 min. later.. the sound is normal. it's the expansion valve working in the evaporator
 

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Cube Farmer
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2,202 Posts
Either that or something to do with the belts...
 

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28 Posts
Mine does the same.
BTW what about noise when it starts or stop working (automaticly together with fan). Do you hear this when engine is running (but car stops) ? Mine is really loud and I don't know if I should worry about that ?

Janusz
 

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hard on equipment
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2,104 Posts
Discussion Starter #11
Thanks for all the responses everyone. :D The sound when it starts or stops (the click) is the clutch on the compressor engaging.
 

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Formerly LordofSearchMod
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18,041 Posts
januszk said:
Mine does the same.
BTW what about noise when it starts or stop working (automaticly together with fan). Do you hear this when engine is running (but car stops) ? Mine is really loud and I don't know if I should worry about that ?

Janusz
the fan running after the car is off is because the car is still too hot... perfectly normal...
 
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