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Steam whistle sound/whine???

Old 11-11-2013, 11:31 AM
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Default Steam whistle sound/whine???

the other day I turned the heater on to see how well it worked since I have never used it. And as soon as I turned it to high and then cycled through the vent positions, defrost, vents and floor i started to get a steady sound like a steam whistle but in more of a whining pitch ever 5 seconds in the left front of the dash any ideas?
Old 11-11-2013, 03:34 PM
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kjc
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I'd check for a vacuum leak. It could be a leak just behind the heater control panel.
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