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E36/7 Z3 (1996-2002)
E36/7 Z3 Roadster, Z3 coupe, Z3 M Roadster and Z3 M Coupe talk with our gurus here.

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  #1  
Old 03-25-2011, 06:34 AM
chance144 chance144 is offline
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Location: Houston, TX
 
Join Date: May 2008
Posts: 10
Mein Auto: 2001 M Coupe
2001 M Coupe - Gurgling after ignition turned off?

Hi everyone,

I have had this car for about 4 years, hast 37,500 miles, and this has never happened before. I drive it once a week at least, but I have been gone for the last 3 months. My girlfriend started it up every week or so, and drove it a bit.

Two days ago, it was extremely humid and warm. I drove it for about 15 minutes, and when I came home, I could hear liquid hissing on something hot, which I have never heard before (I had the AC on, as I usually do in Houston, and I never actually noticed the condensation hissing when I parked it). Yesterday, I ran a few errands, getting out on the highway, basically driving it a bit to warm everything up and get it going. When I got back, there was no hissing, but I could here a gurgling (like someone, er, using a "glass smoking apparatus" in what sounded like the cooling system (what else could it be?). it settled after about 30 seconds. Again, this is not something I have ever heard before. I had the AC on, and looked under the car after I parked, and saw only a drop or two of H2O (most likely from the AC condensation).

Any ideas what this could be?

Thanks
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  #2  
Old 03-25-2011, 06:59 AM
Oldman M Coupe's Avatar
Oldman M Coupe Oldman M Coupe is offline
Oldman M Coupe
Location: Norwalk Conn
 
Join Date: Aug 2009
Posts: 193
Mein Auto: 2000 M Coupe
The sound you hear is the AC refridgerant equilizing pressure. And the hissing is the AC draining water on exhaust.
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Old 03-25-2011, 07:08 AM
chance144 chance144 is offline
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Location: Houston, TX
 
Join Date: May 2008
Posts: 10
Mein Auto: 2001 M Coupe
That is what I figured, it's just that I have never heard it before (either the hissing of the AC condensation hitting something hot, or the gurgling). So it isn't anything to worry about?
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  #4  
Old 03-25-2011, 04:41 PM
Oldman M Coupe's Avatar
Oldman M Coupe Oldman M Coupe is offline
Oldman M Coupe
Location: Norwalk Conn
 
Join Date: Aug 2009
Posts: 193
Mein Auto: 2000 M Coupe
Your car is fine.
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