Detailed Pre-checks
WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Check the thermostat opening temperature to make sure the cooling system is operating at the specified temperature. If it is low, internal engine parts are not running at specified internal operating clearances.