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san rensho · 07-25-2014, 01:46 PM

I am getting what sounds like a groan or a moooing sound from somewhere in the front of the car with the AC on. Can't really tell if its coming from deep in the dash or in the frunk copartment.

It only happens after I've been driving for a while and I am coasting to a stop. It makes the sound for just a few seconds and goes away. I know its AC related because if I turn off the AC button, the sound goes away instantly. I put in about 12 ounces of refrigerant in the car about 3 months ago.

Any ideas?

07-25-2014, 01:46 PM	#1
san rensho Registered User Join Date: May 2011 Location: Miami florida Posts: 1,591	Air conditioner noise I am getting what sounds like a groan or a moooing sound from somewhere in the front of the car with the AC on. Can't really tell if its coming from deep in the dash or in the frunk copartment. It only happens after I've been driving for a while and I am coasting to a stop. It makes the sound for just a few seconds and goes away. I know its AC related because if I turn off the AC button, the sound goes away instantly. I put in about 12 ounces of refrigerant in the car about 3 months ago. Any ideas? __________________ Current car 2000 Boxster 2.7l red/black Previous cars 1973 Opel Manta 1969(?) Fiat 850 Convertible 1979 Lancia Beta Coupe 1981 Alfa Romeo GTV 6 1985 Alfa Romeo Graduate 1985 Porsche 944 1989 Porsche 944 1981 Triumph TR7 1989 (?) Alfa Romeo Milano 1993 Saab 9000