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08-18-2005, 07:57 PM
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AF Newbie
 Join Date: Dec 2003
Location: Gaithersburg, Maryland
Posts: 10
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Whistle/buzz in heating/cooling system
My 2000 Crown Vic makes a buzzing sound when the climate control system is either off or any setting besides Defrost or Floor/Defrost is on.
To drive without hearing this buzz you have to have Defrost or Floor/Defrost on. When you accelerate steadily the buzz goes away, so it seems to be related to the vacuum. Also it doesn't start until the engine has been operating for a while. The Ford dealer couldn't reproduce it, probably because they didn't test-drive it long enough or they just idled in their garage. Anyone ever heard of this or similar? |
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