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High-pitched whistling sound - vacuum leak? 700 1991

posted by  darius on  Mon Mar 8 06:56 CST 2004
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last visit: Sat Sep 20 19:24 CST 2014
[RELATED]

At speeds over 35 mph, esp. at high speed, I have a high-pitched whistling sound that sounds as if it is coming from the heater vents, or somewhere in the dash - it is almost like the sound one of those high-pitch whistles for dogs make (can't quite hear it, but you know it is there). It always stops when the car stops. I replaced the heater blower motor a couple of months ago and have wondered if I didn't seal it properly, and also wonder if this could be some kind of vacuum leak.
--
Darius in Albany NY '86 744 GLE (175K, given to my mother-in-law); '91 745 Turbo (167K-my 'Little Red Wagon')






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