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2003 Honda Odyssey A/C Hissing

Tiny
DREDDAWAY
  • MEMBER
  • 2003 HONDA ODYSSEY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
There is a loud hissing noise throughout the cabin which I believe is plumbing for the A/C unit. When turning A/C off, the noise goes away. Curious to know what has failed and how to fix.
Monday, November 9th, 2009 AT 7:43 AM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi dreddaway,

If the noise is pressure like hissing noise, most probably it is caused by the expansion valve and to replace it you would need to discharge the ac system and remove the cooling coil.
This should be done by qualified AC personnels with proper equipments.
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Wednesday, November 11th, 2009 AT 2:27 PM

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