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Discussion Starter · #1 ·
Hi friends,

Some back ground on my car - It's a 2012 Cruze 2LT with 140,000 miles.
Now the issue - When I turn the AC on I hear a hissing noise from the dashboard. Am not actually sure if the AC blows cold air since it's already pretty cold outside since last couple of day (I live in Florida). When I turn off the AC and just keep the fan on then I don't hear the hissing noise. Any idea what's wrong with the AC?

Thank you.
 

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Conservative Acoustic Foam
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Does the sound stay constant or is it when you initially turn it on? There will be an initial hiss as the pressure builds in the lines from the first time the compressor starts up, at least in my experience.
 

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Discussion Starter · #3 ·
Thanks for the quick reply. I just went down and checked again. Now I don't hear the hissing noise but the AC doesn't throw cold air. I don't even think pushing the AC button engages the compressor anymore because usually when you push the AC button you see a drop in the RPM for half a second and now I don't see that happening.

Does the sound stay constant or is it when you initially turn it on? There will be an initial hiss as the pressure builds in the lines from the first time the compressor starts up, at least in my experience.
 

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Administrator, Resident Tater Salad
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Thanks for the quick reply. I just went down and checked again. Now I don't hear the hissing noise but the AC doesn't throw cold air. I don't even think pushing the AC button engages the compressor anymore because usually when you push the AC button you see a drop in the RPM for half a second and now I don't see that happening.
What's the outside temperature? A/C compressor won't engage below 37* or so.

But yes, initial hissing is normal, after which it should subside and put out cool air after 30 seconds or so.
 
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