Continual hissing sound
07-08-2007, 10:55 PM
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Continual hissing sound
Car is a 03 TL-S. I notice there is a hissing sound that occurs evern minute or so, and lasts for about 5 seconds. Seems to be coming from the front passenger side and sounds like air bleeding. What might it be?
07-08-2007, 11:17 PM
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are you sure it's not coming from the driver's front? if it is, it's probably the intake drawing in air - but then again it's continuous and not every minute or so.
07-09-2007, 01:22 AM
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I am thinking it's the climate control. When the unit is off, no sound. If no, it is periodic. No biggie I guess. It is supposed to be audible? I don't mean sound of the fan, but the hiss.
07-10-2007, 09:54 AM
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Found this online:
"The copper lines carry both liquid (small line) and a high velocity gas (large insulated line). A hissing sound is normal during operation and for a little while after the unit shuts off. The only time I would be concerned about the hissing is if the cooling performance has been deteriorating or if the hissing is intermittent every few seconds. If you are getting an intermittent rush/hiss noise coupled with poor performace, you may have a problem with low refrigerant charge and you should call in a pro to look at the system."
This is general so not sure if it applies to our cars setup (I'm not one to mess with the A/C). In searching online though I found more than a handful of concerns with a hissing noise so it seems common. I guess it would depend on how profound the hiss is.
"The copper lines carry both liquid (small line) and a high velocity gas (large insulated line). A hissing sound is normal during operation and for a little while after the unit shuts off. The only time I would be concerned about the hissing is if the cooling performance has been deteriorating or if the hissing is intermittent every few seconds. If you are getting an intermittent rush/hiss noise coupled with poor performace, you may have a problem with low refrigerant charge and you should call in a pro to look at the system."
This is general so not sure if it applies to our cars setup (I'm not one to mess with the A/C). In searching online though I found more than a handful of concerns with a hissing noise so it seems common. I guess it would depend on how profound the hiss is.
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07-10-2007, 11:21 AM
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07-10-2007, 06:58 PM
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Originally Posted by bigbadboss101
Car is a 03 TL-S. I notice there is a hissing sound that occurs evern minute or so, and lasts for about 5 seconds. Seems to be coming from the front passenger side and sounds like air bleeding. What might it be?
I just bought my 03 type S last week and have noticed the same sound coming from the same place at the same interval. I think it may have something to do with the expansion valve leading to the evaporator. I don't think anybody but me really notices it .... I guess I can live with it as long as it keep blowing cold. It would be nice to know if there was a fix.
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