# 2004 Chevrolet Cavalier - HVAC issues

**URL:** <https://community.cartalk.com/t/2004-chevrolet-cavalier-hvac-issues/138081>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet\
**Created:** [April 7, 2019, 1:59pm UTC](https://community.cartalk.com/t/2004-chevrolet-cavalier-hvac-issues/138081 "2019-04-07T13:59:15Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![StephanieHudson](https://avatars.discourse-cdn.com/v4/letter/s/7c8e57/32.png) [@StephanieHudson](https://community.cartalk.com/u/StephanieHudson)\
**Post date:** [April 7, 2019, 1:59pm UTC](https://community.cartalk.com/t/2004-chevrolet-cavalier-hvac-issues/138081/1 "2019-04-07T13:59:15Z")

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My car is clicking when I turn on the air conditioning, plus fumes are coming in when I.turn it on. Smells like oil or maybe leak in Freon. Not sure but hope you can tell me

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [April 7, 2019, 6:52pm UTC](https://community.cartalk.com/t/2004-chevrolet-cavalier-hvac-issues/138081/2 "2019-04-07T18:52:48Z")

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Multiple problems. The clicking is blend doors. The smell most likely is the heater core, or could be the evaporator coil.  
Only a qualified auto AC shop can tell you for sure.