Sounds like your water pump is faulty, or you got a leak somewhere else. When water is low, it wont go through the heater core, thus no heat, if the water pump is driping or making a "grinding" noise then the pump is bad, if not its leaking somewhere else, change the pump or find and stop the leak and you should be fine
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Tuesday, December 22nd, 2009 AT 2:15 PM