HEATER

2004 Mercury Mountaineer

Tiny

klewis37

February, 21, 2011 AT 6:56 PM

My heater is blowing cold air. It has antifreeze in it

FOUND 4701 RELATED QUESTIONS

Heater

17 ANSWERS
11 IMAGES

1 Answer

Tiny

Jacobandnickolas

April, 1, 2011 AT 6:20 PM

WIth the engine running, hot and the heater on, feel both heater core hoses. If both are hot, check the blend air door. If only one gets hot, flush the heater core. NOTE: The engine must be at operating temp for the heater to work properly.

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