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Can't find where to recharge AC 02 s60T

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cmblackburn
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Joined: 07 Apr 2012, 04:23
Year and Model: 1998 S70 T5M
Location: Raleigh, North Carolina
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Post by cmblackburn »

When it's turned off? May be the compressor spinning down.....or just the hvac system closing the flaps inside. Wait awhile and recheck your system to see if it's holding a steady psi.
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jimmy57
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Post by jimmy57 »

When the compressor stops the refrigerant pressure equalizes between the high pressure and low pressure sides of system. The backflow through the expansion valve causes the hiss.

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