Close

Rapid loss of coolant only when engines running , why?
on 2003 Ford Explorer Sport Trac

Yesterday while driving, within about 10 miles the temp gauge when from fine to HOT , the "check" gauge light alarm sounded...I pulled over and the coolant pored out onto the ground from right side (while facing the vehicle) this is a 2004 Sport Trac. With 70,000 miles. A few days ago, the gauge slowly went from normal to HOT but the loss of coolant seemed to be slower as well. I added the proper ford coolant and distilled water combo and let the truck cool down for 2 days...NO leakage under the vehicle at all in either case while truck was parked. What could be the problem? I appreciate your response...

Asked by for the 2003 Ford Explorer Sport Trac
check where upper radiator hose connects to engine. that will be the thermostat housing. made of plastic. usually cracks. replace a lot of them.