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Loud thunk , possibly from AC?

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Old 03-16-2012, 12:12 PM
  #1  
Andy13186
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Default Loud thunk , possibly from AC?

I turned my car on this morning and changed the AC from max ac to normal AC, like 15 seconds later i hear a loud thunk, i thought i ran over something but i didnt see anything. Is this AC thunk normal?

I know my 2003 mustang gt did this sometimes, but i had never had it happen on my 2011. Mabe its only when using the non-max ac setting.

Has this happened to anyone else?

Last edited by Andy13186; 03-16-2012 at 12:14 PM.
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Old 03-17-2012, 04:08 PM
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kenthicken
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From behind the dash? A/C blend valve.
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Old 03-17-2012, 08:03 PM
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Andy13186
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Originally Posted by kenthicken
From behind the dash? A/C blend valve.
is it supposed to do this or should i change something?
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Old 03-18-2012, 08:08 AM
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White05GT
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Without actually hearing it, can't tell you if it's normal or not.
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