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Forum Newbie
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Last Login: 6/14/2009 3:47:31 AM
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I have a 1997 ford f-150. When I turn on the air cond. I hear a thumping sound that varies According to engine rpm.The air conditioner blows cold air,and the defrost works,but goes thump,thump,thump.Could this be low freon or a problem with the compressor? Or maybe somthing else? Any clue?
NadineB
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Forum Newbie
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Last Login: 6/14/2009 4:47:04 AM
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| Check for belt tension. Sounds like it may have a compressor problem if it only happens with a/c on. Possible compressor clutch problem.
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Forum Member
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Last Login: 6/14/2009 11:09:26 PM
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Check to see if you need a new belt too. A belt may appear good, but the tensioner has marks on it to indicate when the belt has become stretched beyond its limits.
Hop
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Forum Newbie
Group: Forum Members
Last Login: 6/14/2009 3:47:31 AM
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the compressor clutch cycles on and off.Connections are good
NadineB
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