The fans will come on when the temp reaches around 209 degrees for the cooling system and when the ac is on and the high side is 150 lb or higher.
I would start with checking the thermostat. It may be closed all the time. If you have driven this overheated, you may have done internal damage to the head gaskets.
There are many reasons for this, such as a bad rad cap, clogged radiator water pump failure and lastly, blown head gasket.
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Tuesday, October 18th, 2011 AT 4:29 PM