One problem related to radiator has been reported for the 2007 Ford Explorer Sport Trac. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Ford Explorer Sport Trac based on all problems reported for the 2007 Explorer Sport Trac.
Radiator is leaking coolant. Coolant leaks the from aluminum core, pools up at the bottom in the plastic and drips out from the bottom of the plastic on both the driver and passenger side. Talked to Ford about the issue and they said there was a TSB issued for this (which I realize does not extend the warranty) and that when the truck was made, the fan that cools the radiator was not programmed correctly. It wouldn't run when it necessarily needed to or for as long as it needed to which is causing the radiator to overheat and the aluminum to separate at the seam. . . Thus causing a coolant leak and leading to the vehicle overheating. Unfortunately, the only fix was just to replace the radiator with an "updated" radiator and have the programming updated for the fan to function like it should have in the first place. (not sure I agree with paying a lot of money to fix something that should have worked properly in the first place. ).