# Ac and temp sensor?

**URL:** <https://community.cartalk.com/t/ac-and-temp-sensor/48258>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, impala\
**Created:** [May 2, 2010, 3:37pm UTC](https://community.cartalk.com/t/ac-and-temp-sensor/48258 "2010-05-02T15:37:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![tomcarver](https://avatars.discourse-cdn.com/v4/letter/t/b487fb/32.png) [@tomcarver](https://community.cartalk.com/u/tomcarver)\
**Post date:** [May 2, 2010, 3:37pm UTC](https://community.cartalk.com/t/ac-and-temp-sensor/48258/1 "2010-05-02T15:37:04Z")

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Yesterday I was driving with the ac on and it was working fine. When I left work, after the car sat for about 4 hours, the temperature readout under the speedo said it was -38 degrees. When I press the button to turn the ac on it blinks 3 - 4 times and goes out. The ac is not working. But if I let the car cool down for 3-4 hours the temp sensor and ac are fine. Anyone else have this happen??

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**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\
**Post date:** [May 2, 2010, 3:43pm UTC](https://community.cartalk.com/t/ac-and-temp-sensor/48258/2 "2010-05-02T15:43:46Z")

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I assume the temperature sensor you are talking about is for the outside temperature reading. I would check for a faulty power connection to those areas as the possible source of trouble.

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**Author:** ![tomcarver](https://avatars.discourse-cdn.com/v4/letter/t/b487fb/32.png) [@tomcarver](https://community.cartalk.com/u/tomcarver)\
**Post date:** [May 2, 2010, 3:58pm UTC](https://community.cartalk.com/t/ac-and-temp-sensor/48258/3 "2010-05-02T15:58:28Z")

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Thanks, I will probably take this to the dealer.