# Heater core

**URL:** <https://community.cartalk.com/t/heater-core/37636>\
**Category:** Maintenance/Repairs\
**Tags:** saturn, sc\
**Created:** [October 5, 2009, 5:16pm UTC](https://community.cartalk.com/t/heater-core/37636 "2009-10-05T17:16:48Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![adacker0357](https://avatars.discourse-cdn.com/v4/letter/a/94ad74/32.png) [@adacker0357](https://community.cartalk.com/u/adacker0357)\
**Post date:** [October 5, 2009, 5:16pm UTC](https://community.cartalk.com/t/heater-core/37636/1 "2009-10-05T17:16:48Z")

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How do I flush the heater core

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**Author:** ![bimmerman](https://avatars.discourse-cdn.com/v4/letter/b/b9e5f3/32.png) [@bimmerman](https://community.cartalk.com/u/bimmerman)\
**Post date:** [October 5, 2009, 5:18pm UTC](https://community.cartalk.com/t/heater-core/37636/2 "2009-10-05T17:18:46Z")

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if i’m mistaken you will have to flush the whole system. get some cleane at the auto store, for the cooling system, and i belive you need the heater to be on high, and hot as it gets.

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**Author:** ![Docnick](https://avatars.discourse-cdn.com/v4/letter/d/ecae2f/32.png) [@Docnick](https://community.cartalk.com/u/Docnick)\
**Post date:** [October 5, 2009, 5:22pm UTC](https://community.cartalk.com/t/heater-core/37636/3 "2009-10-05T17:22:32Z")

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Most service stations will do a “reverse flush” by attaching the flushing hose to the heater outlet hose (with a “flushing T”) and pushing the water through the heater core and the rest of the system to exit at the top of the rad with the cap removed. I used to do this until it became illegal to drain antifreeze on your driveway.

If you go to your auto supply store and ask for a “flushing kit” you will get all the parts with the instructions.

Good luck!

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**Author:** ![adacker0357](https://avatars.discourse-cdn.com/v4/letter/a/94ad74/32.png) [@adacker0357](https://community.cartalk.com/u/adacker0357)\
**Post date:** [October 5, 2009, 5:25pm UTC](https://community.cartalk.com/t/heater-core/37636/4 "2009-10-05T17:25:37Z")

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We have heat in the car but when you change the speed of the blowe the heat is cooler