# Heating & cooling **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** nissan\ **Created:** [November 10, 2020, 5:55am UTC](https://community.cartalk.com/t/heating-cooling/172155 "2020-11-10T05:55:43Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![scottadams650\_166242](https://avatars.discourse-cdn.com/v4/letter/s/3ec8ea/32.png) [@scottadams650\_166242](https://community.cartalk.com/u/scottadams650_166242)\ **Post date:** [November 10, 2020, 5:55am UTC](https://community.cartalk.com/t/heating-cooling/172155/1 "2020-11-10T05:55:44Z")
So my 03 Altima (152k) temp gauge reads right where it should ,but I’ve been noticing that the only time I get hot or warm air from vents is when the car is being driven under load (like freeway) as soon as im at a stop the air slowly turns cooler then cold. I also hear what sounds to me like gurgling or like a sink sounds when you pull the drain coming from behind dash or floorboard on passenger side. havent lost any coolant or needed to add. any ideas? ---
**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\ **Post date:** [November 10, 2020, 9:10am UTC](https://community.cartalk.com/t/heating-cooling/172155/2 "2020-11-10T09:10:25Z")
Low coolant level, you have a leak someplace. ---
**Author:** ![pyrolord314](https://avatars.discourse-cdn.com/v4/letter/p/6a8cbe/32.png) [@pyrolord314](https://community.cartalk.com/u/pyrolord314)\ **Post date:** [November 10, 2020, 1:47pm UTC](https://community.cartalk.com/t/heating-cooling/172155/3 "2020-11-10T13:47:56Z")
> [@scottadams650\_166242](#): > > havent lost any coolant or needed to add. have you actually checked the radiator, or just the overflow? (Note when checking the radiator, do not open the radiator cap unless the engine is **COLD** ) ---
**Author:** ![oldnotdeadyet](https://avatars.discourse-cdn.com/v4/letter/o/a6a055/32.png) [@oldnotdeadyet](https://community.cartalk.com/u/oldnotdeadyet)\ **Post date:** [November 10, 2020, 2:46pm UTC](https://community.cartalk.com/t/heating-cooling/172155/4 "2020-11-10T14:46:05Z")
At the very minimm, your cooling system needs to have the air bled out. If it returns, you need to find out why. ---
**Author:** ![shadowfax](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/shadowfax/32/13026_2.png) [@shadowfax](https://community.cartalk.com/u/shadowfax)\ **Post date:** [November 10, 2020, 3:51pm UTC](https://community.cartalk.com/t/heating-cooling/172155/5 "2020-11-10T15:51:08Z")
The temp gauge doesn’t move _at all_ when you’re stopped? ---
**Author:** ![scottadams650\_166242](https://avatars.discourse-cdn.com/v4/letter/s/3ec8ea/32.png) [@scottadams650\_166242](https://community.cartalk.com/u/scottadams650_166242)\ **Post date:** [November 10, 2020, 7:54pm UTC](https://community.cartalk.com/t/heating-cooling/172155/6 "2020-11-10T19:54:46Z")
No it does not. ---
**Author:** ![scottadams650\_166242](https://avatars.discourse-cdn.com/v4/letter/s/3ec8ea/32.png) [@scottadams650\_166242](https://community.cartalk.com/u/scottadams650_166242)\ **Post date:** [November 10, 2020, 7:58pm UTC](https://community.cartalk.com/t/heating-cooling/172155/7 "2020-11-10T19:58:03Z")
Thats kinda what I was thinking. So how do you purge the air from the system? I know with an older american vehicle you could park with the nose of the car pointed uphill & all the air would come to the top of radiator. Not sure how to do that with a closed system. ---
**Author:** ![scottadams650\_166242](https://avatars.discourse-cdn.com/v4/letter/s/3ec8ea/32.png) [@scottadams650\_166242](https://community.cartalk.com/u/scottadams650_166242)\ **Post date:** [November 10, 2020, 7:58pm UTC](https://community.cartalk.com/t/heating-cooling/172155/8 "2020-11-10T19:58:33Z")
yes I’ve checked both ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [November 10, 2020, 8:30pm UTC](https://community.cartalk.com/t/heating-cooling/172155/9 "2020-11-10T20:30:19Z")
[![](https://global.discourse-cdn.com/cartalk/original/3X/3/a/3aa0c708428d332ff6643981ae3a4c0e85da2104.jpeg "Nissan V6 Radiator Bleed Air - Video 2 - 2004 Quest") ](https://www.youtube.com/watch?v=An-eeIhRVYw) Tester ---
**Author:** ![scottadams650\_166242](https://avatars.discourse-cdn.com/v4/letter/s/3ec8ea/32.png) [@scottadams650\_166242](https://community.cartalk.com/u/scottadams650_166242)\ **Post date:** [November 11, 2020, 1:59am UTC](https://community.cartalk.com/t/heating-cooling/172155/10 "2020-11-11T01:59:22Z")
Thank you,gonna order one now. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [November 11, 2020, 2:00am UTC](https://community.cartalk.com/t/heating-cooling/172155/11 "2020-11-11T02:00:39Z")
Parts stores have them. Tester ---
**Author:** ![scottadams650\_166242](https://avatars.discourse-cdn.com/v4/letter/s/3ec8ea/32.png) [@scottadams650\_166242](https://community.cartalk.com/u/scottadams650_166242)\ **Post date:** [November 13, 2020, 3:01am UTC](https://community.cartalk.com/t/heating-cooling/172155/12 "2020-11-13T03:01:07Z")
Thank you. ---
**Author:** ![scottadams650\_166242](https://avatars.discourse-cdn.com/v4/letter/s/3ec8ea/32.png) [@scottadams650\_166242](https://community.cartalk.com/u/scottadams650_166242)\ **Post date:** [February 27, 2021, 6:35pm UTC](https://community.cartalk.com/t/heating-cooling/172155/13 "2021-02-27T18:35:59Z")
So it was kinda strange,3-4 weeks ago I was putting the car on jack stands to change a motor mount, as the car got higher on the floor jack it started leaking water out of the water pump housing. I finished the motor mount & lowered the car drove a short distance & the leaking had stopped,however I had no heat coming from my heater. So I changed both thermostats & everything was great…for about 4 days. Then I start seeing coolant under the car every morning so I replaced the pump but again wasnt getting any heat. I believe I had/have air trapped in the system.