The condensation could be the heater core or the drain for a/c plugged so try unplugging that you'll have to look under the car. Or at bottom of firewall it's item 1 in pic run a wire through it to see if it's plugged. If not plugged then bypass heater core. But it's not causing your overheating. Have it pressure checked for internal leaks like a head gasket.
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Wednesday, July 8th, 2015 AT 2:55 PM