# Heater blows cold!

**URL:** <https://community.cartalk.com/t/heater-blows-cold/75807>\
**Category:** Maintenance/Repairs\
**Tags:** civic, honda\
**Created:** [November 29, 2012, 6:16pm UTC](https://community.cartalk.com/t/heater-blows-cold/75807 "2012-11-29T18:16:00Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![Grinny](https://avatars.discourse-cdn.com/v4/letter/g/b9bd4f/32.png) [@Grinny](https://community.cartalk.com/u/Grinny)\
**Post date:** [November 29, 2012, 6:16pm UTC](https://community.cartalk.com/t/heater-blows-cold/75807/1 "2012-11-29T18:16:00Z")

</div>

The heater in my car only blows hot air when I’m driving fast. At stop signs it blows cold. You can imagine how this affects my driving strategy. Any thoughts on what the problem might be?

---

<div class="post-metadata">

**Author:** ![W30post](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/w30post/32/2522_2.png) [@W30post](https://community.cartalk.com/u/W30post)\
**Post date:** [November 29, 2012, 6:30pm UTC](https://community.cartalk.com/t/heater-blows-cold/75807/2 "2012-11-29T18:30:46Z")

</div>

Low coolant level or air trapped in the heater core that needs to be bled out.

---

<div class="post-metadata">

**Author:** ![Big\_Marc](https://avatars.discourse-cdn.com/v4/letter/b/9d8465/32.png) [@Big\_Marc](https://community.cartalk.com/u/Big_Marc)\
**Post date:** [November 29, 2012, 6:30pm UTC](https://community.cartalk.com/t/heater-blows-cold/75807/3 "2012-11-29T18:30:50Z")

</div>

bad thermostate low on coolant cj=heck the the simple stuff first

---

<div class="post-metadata">

**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\
**Post date:** [November 29, 2012, 11:46pm UTC](https://community.cartalk.com/t/heater-blows-cold/75807/4 "2012-11-29T23:46:52Z")

</div>

+1. My money is on the T-stat, but it should all be checked out.

---

<div class="post-metadata">

**Author:** ![dagosa](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/dagosa/32/9837_2.png) [@dagosa](https://community.cartalk.com/u/dagosa)\
**Post date:** [November 30, 2012, 4:27am UTC](https://community.cartalk.com/t/heater-blows-cold/75807/5 "2012-11-30T04:27:40Z")

</div>

A lot would have to do with the age of the car. Just changing the thermostat on a older car and adding antifreeze should be enough to at least test any other problems…clogged radiator/ heater core etc.  
I agree too, Big Mark says do the simple things first…but.

---

<div class="post-metadata">

**Author:** ![Grinny](https://avatars.discourse-cdn.com/v4/letter/g/b9bd4f/32.png) [@Grinny](https://community.cartalk.com/u/Grinny)\
**Post date:** [November 30, 2012, 11:27pm UTC](https://community.cartalk.com/t/heater-blows-cold/75807/6 "2012-11-30T23:27:50Z")

</div>

thanks all for your help in finding a solutiong for this hot & cold purgatory I’m in. Can anyone tell me where the thermostat is located - is it something I can fix myself, or how much it costs to have someone do it?