hissing sound that lasts 30-45 seconds?

1999 FORD TAURUS
77,000 MILES
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WILDBILL1195
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  • 4 POSTS
A hissing sound that lasts 30-45 seconds is coming from the lower of the 2 a/c lines that enter the firewall. . The unit is cooling 33 degrees below ambient and shows 30-35 lbs pressure. Is the hissing sound indicative of a problem?
May 20, 2012 at 10:52 PM
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RASMATAZ
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This hissing sound is normal as the ac system equalizes. No problem
May 20, 2012 at 11:08 PM
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WILDBILL1195
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Thanks you so much, this site rocks!
May 22, 2012 at 8:21 PM
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RIVERMIKERAT
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That is does!
Jun 1, 2012 at 2:15 AM
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