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Horrible squeal?
My a/c is working great, lots of cold air, but a week or so ago, this started.
When I first turn it on, it makes a awful squealing noise. After turn it off and on a few times, it stops. Can anyone tell me why, and how to stop it? |
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08-04-2010, 04:58 PM
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The A/C belt is too loose?
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83 944 NA - Black on black 86 951 - Red - SOLD 7/21 16 Ford Expedition He who hesitates is lost. |
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08-04-2010, 05:01 PM
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It was fine until we converted to 134. Is this normal, and why did it start ONLY after the conversion?
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08-04-2010, 05:24 PM
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The compressor probably wasn't running until it was re-filled. There's a low-pressure switch to prevent the compressor from running when their isn't enough refrigerant in the system.
Without a load (or refrigerant), the compressor clutch is disengaged and the pulley just freewheels. Turn the A/C on and you put a load on the pulley - the compressor actually turns; if the belt is too loose, it'll squeal.
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83 944 NA - Black on black 86 951 - Red - SOLD 7/21 16 Ford Expedition He who hesitates is lost. |
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08-04-2010, 06:50 PM
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Join Date: Jan 2005
Location: In a dumpster behind Albertson's in Los Angeles County
Posts: 2,132
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+1 on the belt being loose. Sounds like a monkey with his B@!!$ caught in a vise.
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1989 944 NA Glacier Blue - SOLD IT 1989 944 S2 Alpine White T-Boned (totaled) by a lady dressed in a CLOWN costume (RIP  ) Apr 89 - Mar 081988 944 Turbo S Silver Rose Metallic, K27/6, Vitesse MAF, Tial 38mm DP WG Semper Fi |
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08-04-2010, 08:51 PM
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Toofah King Bad
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Quote:
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» 1987 924S Turbo - Got Boost? « "DETERMINATION. Sometimes cars test us to make sure we're worthy. Fix it." - alfadoc |
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08-04-2010, 10:06 PM
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Thanks everyone!
Does anyone have a part number for the belt? It is a '84 944 |
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08-05-2010, 04:34 PM
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Registered
Join Date: Jan 2005
Location: In a dumpster behind Albertson's in Los Angeles County
Posts: 2,132
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Porsche part number 999.192.206.50 (K5x1005). You can obtain this belt from just about any autoparts store (I broke one on the road and got it from autozone).
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1989 944 NA Glacier Blue - SOLD IT 1989 944 S2 Alpine White T-Boned (totaled) by a lady dressed in a CLOWN costume (RIP ) Apr 89 - Mar 081988 944 Turbo S Silver Rose Metallic, K27/6, Vitesse MAF, Tial 38mm DP WG Semper Fi |
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08-05-2010, 04:46 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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Or NAPA....mattdavis11 is an AC tech
read link-- Stupid AC question....... BTW, The belt should have about 1/2" play at the top stretch of the AC belt. If you tighten the belt too severly, you can put too much pressure on the lower crankshaft seal and your front crank seal will leak. GL John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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08-05-2010, 04:57 PM
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My Toy
My 951
My 83 NA
1988 Porsche 944 Turbo S Limited Edition
Shaggy
Red
Chumpy
Weiße Scheiße
