# Wrangler heater blows cold air at stop light **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** heating, jeep\ **Created:** [January 20, 2009, 10:43pm UTC](https://community.cartalk.com/t/wrangler-heater-blows-cold-air-at-stop-light/25266 "2009-01-20T22:43:43Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![idowden](https://avatars.discourse-cdn.com/v4/letter/i/dec6dc/32.png) [@idowden](https://community.cartalk.com/u/idowden)\ **Post date:** [January 20, 2009, 10:43pm UTC](https://community.cartalk.com/t/wrangler-heater-blows-cold-air-at-stop-light/25266/1 "2009-01-20T22:43:43Z")
I have a 92 Jeep Wrangler. When the heater is on and the Jeep is moving it blows hot air. But when I stop at a stop light, the heater eventually starts to blow cold air and the temp. gauge starts to creep up. When I start to move again, everything goes back to normal. And sometimes it does it when I am going really slow (5mph) but will stop when I speed up. Any ideas and is this going to be super expensive? ---
**Author:** ![meaneyedcatz](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/meaneyedcatz/32/692_2.png) [@meaneyedcatz](https://community.cartalk.com/u/meaneyedcatz)\ **Post date:** [January 21, 2009, 1:44am UTC](https://community.cartalk.com/t/wrangler-heater-blows-cold-air-at-stop-light/25266/2 "2009-01-21T01:44:27Z")
Check your coolant level. If it is low refill and you may need to burp the system. That means removing any trapped air. Hope this helps. ---
**Author:** ![EllyEllis](https://avatars.discourse-cdn.com/v4/letter/e/f14d63/32.png) [@EllyEllis](https://community.cartalk.com/u/EllyEllis)\ **Post date:** [January 21, 2009, 5:23am UTC](https://community.cartalk.com/t/wrangler-heater-blows-cold-air-at-stop-light/25266/3 "2009-01-21T05:23:16Z")
Yep, check for low coolant!!