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Defrost&heater only blow cold air

(1990 Jeep Cherokee)
in Corvallis, OR on December 31, 2010
blower works the air just never gets warm
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Popular Answer
on December 31, 2010
You have a broken blend door. You can buy that part of the HVAC box aftermarket.
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on January 01, 2011
first check the fluild level of your coolent, if it is low it will blow cold air. When was the last time the termastat was checked or changed. if the above are ok it could possible be the heater core, which may cost a lot to replace. Hope this helps
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on April 16, 2011
check themoster and if not pull one of the heater hoses off and see if water is going to heater cord.
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