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1999 Lincoln Town Car Question: Why does the air conditioner make a loud piercing noise?

 

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Fina, Middletown, RI, April 14, 2009, 14:06
 Rookie

I was testing my AC system for the coming summer and my car is making a loud piercing noise when I turned the AC on. A co-worker told me that it could be a fan belt. Is this a fan belt issue and how much would it cost?

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  • Answer #1

    Protech2989 April 14, 2009, 17:54
     Journeyman

    Indeed a loose Air conditioner Belt can cause noise when turned on as belt slips on pulley, inspection of serpentine belt tensioner should be performed. A weak or bad Air Compressor clutch can also cause noise when engaged. Your local repair shop should perform an inspection to properly diagnose cause of noise and estimate.

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