# Loud Noise

**URL:** <https://community.cartalk.com/t/loud-noise/63264>\
**Category:** Maintenance/Repairs\
**Tags:** odyssey, honda\
**Created:** [April 2, 2011, 1:24pm UTC](https://community.cartalk.com/t/loud-noise/63264 "2011-04-02T13:24:10Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![kteeee](https://avatars.discourse-cdn.com/v4/letter/k/bc8723/32.png) [@kteeee](https://community.cartalk.com/u/kteeee)\
**Post date:** [April 2, 2011, 1:24pm UTC](https://community.cartalk.com/t/loud-noise/63264/1 "2011-04-02T13:24:10Z")

</div>

Our 2006 Odyssey when idle makes a loud noise that sounds like pressure is being released from too much air building up somewhere. It does this about every 30-40 seconds. Just started three days ago after I turned the A/C on for the first time this year. Is it the air compressor? Relay switch? There is also a smell when all this is happening- Freon?