# Heat problem

**URL:** <https://community.cartalk.com/t/heat-problem/18858>\
**Category:** Maintenance/Repairs\
**Created:** [August 30, 2008, 12:10pm UTC](https://community.cartalk.com/t/heat-problem/18858 "2008-08-30T12:10:09Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![slayman](https://avatars.discourse-cdn.com/v4/letter/s/e47c2d/32.png) [@slayman](https://community.cartalk.com/u/slayman)\
**Post date:** [August 30, 2008, 12:10pm UTC](https://community.cartalk.com/t/heat-problem/18858/1 "2008-08-30T12:10:09Z")

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No heat in my 1998 mercury sable. A/C works great. My mechanic does not think the heater core is the problem but cannot figure it out.Is there sensors or other controls I could look for?

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**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:** [August 30, 2008, 2:07pm UTC](https://community.cartalk.com/t/heat-problem/18858/2 "2008-08-30T14:07:56Z")

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The heating system has a blend door that allows either cool outside air into the vehicle or heated air into the vehicle. Check to see if this blend door is functioning properly.

Tester

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**Author:** ![ken\_green](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/ken_green/32/816_2.png) [@ken\_green](https://community.cartalk.com/u/ken_green)\
**Post date:** [August 30, 2008, 3:56pm UTC](https://community.cartalk.com/t/heat-problem/18858/3 "2008-08-30T15:56:41Z")

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Probably the blend door motor #XF1Z-19E616-CA - $68.36. but there are also three vacuum motors as well plus the switch. Here at my Ford dealer we see more of the electric blend door motors than the others.

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**Author:** ![slayman](https://avatars.discourse-cdn.com/v4/letter/s/e47c2d/32.png) [@slayman](https://community.cartalk.com/u/slayman)\
**Post date:** [September 1, 2008, 10:53pm UTC](https://community.cartalk.com/t/heat-problem/18858/4 "2008-09-01T22:53:40Z")

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OK, blend door motor and door are functioning properly. What about the three vacuum motors and the switch. Where do I look for them?