air and heating system on 2002 Dodge Ram 1500

when i turn on the air condition are heater antifreeze runs in the inside of the cab.this also causes my engine to run hot.

by in Mexia, TX on April 02, 2010
3 answers
ANSWER by , April 02, 2010
When the air conditioning is on or the vehicle is in "defrost" the auxiliary fan is supposed to switch on if it doesn't the engine will run hot. If the radiator is partially restricted the cooling system may be put under added pressure when the air conditioning is operating putting stress on the engine's cooling system causing the engine to run hot..
ANSWER by , April 02, 2010
i just want to find out what is causing this problem
ANSWER by , March 23, 2011
replace the heater core