I hear a quiet "hiss" coming from under the hood of my 1997 A4 1.8T after I park and leave the car
#2
It is normal. Are you in a region where your AC compressor is still operating (temps above 41)?
Not to worry it is the AC compressor bleeding off pressure.
Perfectly normal.
HTH,
Peter
Perfectly normal.
HTH,
Peter
#3
Re: It is normal. Are you in a region where your AC compressor is still operating (temps above 41)?
Yup, I live in Honolulu, Hawaii...temperature here is constantly between 68-90.
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