Question about 2004 Jeep Grand Cherokee

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Hearter blowing cold air - 2004 Jeep Grand Cherokee

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Could be a faulty blend door, faulty thermostat, or blockage in the heater core.
Check and see if both heater hoses are hot when the engine is warmed up. If they are look for a blend door problem.

Posted on Dec 12, 2012

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If The heater is blowing cold air, it could be either the thermastate is stuck in a closed position and you need a new one, or your heater coil has gone out. The way you determine if this has happened , check to so if water is leaking from under dash on the passenger side. If it is leaking, it's your heater coil..

Posted on Dec 12, 2012

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