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  #1  
Old 05-18-2002, 01:54 PM
haasman's Avatar
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'95 E320 Wagon: AC clunk ... is this normal?

When I engage the AC or when starting the car with the AC button depressed there is a clunk sound from the dash. Is this normal? I was wondering if there is a vacuum leak?

The car is a '95 E320 Wagon.

I had my blower motor replaced about 10mos ago under Starmark warranty. Do someone not attach a vacuum line correctly or is something leaking?

Thanks for your advice as always.
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Old 05-18-2002, 02:09 PM
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Wonder if it could be a vacuum damper shutting?
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Old 05-18-2002, 04:14 PM
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Jim,

This is exactly what it sounds like to me.

The question still remains ... is this normal or is there a gradual vacuum leak?
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Old 05-18-2002, 04:18 PM
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I hear it on occasion on mine. Never have thought too much about it as long as the air is coming from where it is supposed to be coming from.
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  #5  
Old 05-18-2002, 07:23 PM
BlackE55
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Ditto -- there's a "clunk" when turning off the heat or A/C. It's about a 2 sec delay after hitting the HVAC button. Not sure if it happens everytime, but no need to worry.
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