# 2003 Mercury Mountaineer Not getting any heat

**URL:** <https://community.cartalk.com/t/2003-mercury-mountaineer-not-getting-any-heat/76987>\
**Category:** Maintenance/Repairs\
**Tags:** mercury, mountaineer\
**Created:** [January 27, 2013, 11:39pm UTC](https://community.cartalk.com/t/2003-mercury-mountaineer-not-getting-any-heat/76987 "2013-01-27T23:39:59Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![dusty1](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@dusty1](https://community.cartalk.com/u/dusty1)\
**Post date:** [January 27, 2013, 11:39pm UTC](https://community.cartalk.com/t/2003-mercury-mountaineer-not-getting-any-heat/76987/1 "2013-01-27T23:39:59Z")

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Tom & Ray,  
Recently found with the cold snap on the east coast that my vehicle wasn’t getting heat to the passenger compartment.  
I changed my thermostat and added a gallon of 50/50 antifreeze to the radiator coolant container. Can you possibly give me an answer as to what the next step I should try?

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**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\
**Post date:** [January 28, 2013, 12:45am UTC](https://community.cartalk.com/t/2003-mercury-mountaineer-not-getting-any-heat/76987/2 "2013-01-28T00:45:54Z")

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@dusty1 Tom & Ray don’t answer the posts.

“We the people” do.  
How many miles?  
Is the engine reaching operating temperature?  
Are both heater hoses hot?  
I suggest you seriously consider draining the block, radiator and flushing your heater core.

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**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:** [January 28, 2013, 11:05am UTC](https://community.cartalk.com/t/2003-mercury-mountaineer-not-getting-any-heat/76987/3 "2013-01-28T11:05:27Z")

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The first thing to check , when the engine is cold, is your radiator full to the top? If it is not, refill with 50-50 coolant and look for a leak.

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**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\
**Post date:** [January 28, 2013, 11:25am UTC](https://community.cartalk.com/t/2003-mercury-mountaineer-not-getting-any-heat/76987/4 "2013-01-28T11:25:10Z")

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If both heater hoses are hot when the engine is at operating temperature there could be a blend door fault; not uncommon on Fords.

Just for hoots, you could try and run the EATC self diagnostics and see if anything pops up.

[http://www.idmsvcs.com/2vmod/eatcswap/selftest.html](http://www.idmsvcs.com/2vmod/eatcswap/selftest.html)