# Hyundai Elantra - A/C and Heater Problem

**URL:** <https://community.cartalk.com/t/hyundai-elantra-a-c-and-heater-problem/23563>\
**Category:** Maintenance/Repairs\
**Tags:** heating, airconditioning\
**Created:** [December 18, 2008, 1:32pm UTC](https://community.cartalk.com/t/hyundai-elantra-a-c-and-heater-problem/23563 "2008-12-18T13:32:18Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![basseff](https://avatars.discourse-cdn.com/v4/letter/b/b38774/32.png) [@basseff](https://community.cartalk.com/u/basseff)\
**Post date:** [December 18, 2008, 1:32pm UTC](https://community.cartalk.com/t/hyundai-elantra-a-c-and-heater-problem/23563/1 "2008-12-18T13:32:18Z")

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My wife drives a 2003 Hyundai Elantra. When the A/C is on in the summer, it takes a long time for the air to cool. Even after the air turns cold, when the car comes to a stop or slows down, the cold air starts blowing hot again. The air does not turn cold again until the car starts to drive and reaches about 25-30 mph. The reverse problem occurs with the heater in the winter. The air does not blow hot until long after the engine warms (about 5-10 minutes after temperature gauge reaches the midway point), and the air blows cold once the car comes to a stop. The hot air does not resume until the car gets moving again. Thanks for any help you can provide.

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**Author:** ![basseff](https://avatars.discourse-cdn.com/v4/letter/b/b38774/32.png) [@basseff](https://community.cartalk.com/u/basseff)\
**Post date:** [December 18, 2008, 4:22pm UTC](https://community.cartalk.com/t/hyundai-elantra-a-c-and-heater-problem/23563/2 "2008-12-18T16:22:05Z")

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bump

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**Author:** ![kiki12](https://avatars.discourse-cdn.com/v4/letter/k/b782af/32.png) [@kiki12](https://community.cartalk.com/u/kiki12)\
**Post date:** [December 29, 2008, 2:03pm UTC](https://community.cartalk.com/t/hyundai-elantra-a-c-and-heater-problem/23563/3 "2008-12-29T14:03:42Z")

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i am having the exact problem with my 2003… did you ever figure out what the problem was?

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**Author:** ![basseff](https://avatars.discourse-cdn.com/v4/letter/b/b38774/32.png) [@basseff](https://community.cartalk.com/u/basseff)\
**Post date:** [January 5, 2009, 7:51pm UTC](https://community.cartalk.com/t/hyundai-elantra-a-c-and-heater-problem/23563/4 "2009-01-05T19:51:28Z")

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Not yet. I hope to get it into a shop in the coming weeks. If I find out what it is, I’ll be sure to post a reply.