# Losing heat in Celica

**URL:** <https://forums.speedlife.net/t/losing-heat-in-celica/145035>\
**Category:** Canada Nissan Automotive\
**Created:** [November 8, 2006, 8:44pm UTC](https://forums.speedlife.net/t/losing-heat-in-celica/145035 "2006-11-08T20:44:35Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![DeathBy240](https://avatars.discourse-cdn.com/v4/letter/d/258eb7/32.png) [@DeathBy240](https://forums.speedlife.net/u/DeathBy240)\
**Post date:** [November 8, 2006, 8:44pm UTC](https://forums.speedlife.net/t/losing-heat-in-celica/145035/1 "2006-11-08T20:44:35Z")

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Yeah blah blah its not a Nissan… whatever.

The heat in my '87 Celica has been pretty wonky. It warms up quickly but every once in a while it will go ice cold. I fuck around with the fan control and heat control and sometime the heat comes back, but I dont know if its because I touched anything.

I have coolant topped up. When the car is warm, there is some in the overflow tank. Could it be that I have an air bubble? The car doesn’t overheat though…

Any thoughts?

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**Author:** ![Last\_Fuse](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/last_fuse/32/5847_2.png) [@Last\_Fuse](https://forums.speedlife.net/u/Last_Fuse)\
**Post date:** [November 8, 2006, 8:53pm UTC](https://forums.speedlife.net/t/losing-heat-in-celica/145035/2 "2006-11-08T20:53:15Z")

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Hmmmmm… Interesting:

Is your rad cap working? Check pressure, if failing pick up a Stant cap (Good quality).

If you had a low level in your rad then i’ll bet air pocket, run it with out cap on (front end jacked up if you can) and rev it. Little air bubbles will come out and this process may take 30 mins to 1hr depending on your system.

Finally for mechanical, How is your thermostat? If it sticks open you’ll get a nice cold running motor. Replace and get the air pocket out again.

If it still drops off, well you know what its NOT.

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**Author:** ![MrRage](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mrrage/32/5804_2.png) [@MrRage](https://forums.speedlife.net/u/MrRage)\
**Post date:** [November 8, 2006, 9:00pm UTC](https://forums.speedlife.net/t/losing-heat-in-celica/145035/3 "2006-11-08T21:00:26Z")

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Sounds like a water pump or fault heater core. You might also have air in your system. Might be time for a cooling system flush/bleed…

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**Author:** ![03\_SunBurst\_V](https://avatars.discourse-cdn.com/v4/letter/0/a8b319/32.png) [@03\_SunBurst\_V](https://forums.speedlife.net/u/03_SunBurst_V)\
**Post date:** [November 8, 2006, 10:04pm UTC](https://forums.speedlife.net/t/losing-heat-in-celica/145035/4 "2006-11-08T22:04:10Z")

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I think it’s the thermostat, seeing that the heat goes off sometimes. Most likely the thermostat is “sticking” open.

I would check/change this first, seeing as it is the quickest and least expensive to do.

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**Author:** ![Last\_Fuse](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/last_fuse/32/5847_2.png) [@Last\_Fuse](https://forums.speedlife.net/u/Last_Fuse)\
**Post date:** [November 16, 2006, 7:50am UTC](https://forums.speedlife.net/t/losing-heat-in-celica/145035/5 "2006-11-16T07:50:18Z")

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So what ever happened to this?