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A/C makes Knocking Sound in Warm Weather

  #1  
Old 05-13-2009, 03:32 PM
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A/C makes Knocking Sound in Warm Weather

I bought a 2008 Honda Fit last winter. I just realized as the weather is getting warmer, the A/C makes knocking sound every time I turn it on. It only happens when outside temp is higher than 80. I am planning to take it to dealer since the car is still under warranty but I am wondering if others have similar issues.

Thanks
 
  #2  
Old 05-13-2009, 04:04 PM
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your a/c makes some noise when it turns on/off... so you're saying it's a different sound than when it was with the defroster turned on? cause the a/c turns on while in the defrost mode.
 
  #3  
Old 05-13-2009, 04:16 PM
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When it's warm, if I turn on the a/c or defroster, the knocking noise will come interminently. When it does, the a/c does not blow cool air. My first thought was the compressor, but it seems the sound is coming from the firewall area.
 
  #4  
Old 05-14-2009, 10:27 AM
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im having the same exact problem? is there a fix or can i just take it to the dealership, my fit does have a salvage title is it still under waranty??
 
  #5  
Old 05-17-2009, 04:35 PM
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Try just running the A/C during the winter months. Oh, wait a minute...
 
  #6  
Old 05-17-2009, 11:13 PM
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Originally Posted by vtakthis View Post
im having the same exact problem? is there a fix or can i just take it to the dealership, my fit does have a salvage title is it still under waranty??
salvaged vehicles are no longer covered by honda's warranty. but the a/c is supposed to make noise so unless it's a LOT of noise or the a/c isn't working, there isn't really a problem. also, the noise you guys are hearing might just be the a/c kicking on and putting more strain on your engine at idle speed.
 
  #7  
Old 05-19-2009, 03:42 PM
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Angry A/C noise

Re:07 Fit ~ My a/c compressor has been making noise since last summer but every time I bring it to the dealership, no noise. What else is new?
 
  #8  
Old 06-19-2009, 12:38 PM
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The dealer found out that there is too much freon/pressure in the compressor. The warm wether cause them to expand even more pressure making the knocking noise to the compressor. In this case, I was lucky the compressor is able to witstand such amount of pressure.

The dealer evacuate and recharge the compressor according to spec. Problems solved.
 
  #9  
Old 04-12-2019, 07:14 AM
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Please let this be the answer

Originally Posted by jjnasution View Post
The dealer found out that there is too much freon/pressure in the compressor. The warm wether cause them to expand even more pressure making the knocking noise to the compressor. In this case, I was lucky the compressor is able to witstand such amount of pressure.

The dealer evacuate and recharge the compressor according to spec. Problems solved.
I have been parking my 2007 Fit sport for the last 2 summers because of this. Please let this be the fix.
 
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