Ford Expedition intermittent power loss at high temperatures causing RPM limitation on Ford Expedition

Some Ford Expedition owners report experiencing intermittent power loss at high temperatures, which can lead to RPM limitations. These issues may stem from a faulty EGR valve that fails to open or close properly, allowing excessive exhaust gas into the combustion chamber and causing engine power drops. Additionally, a malfunctioning brake light switch has been identified as a cause of power loss in some 2016 models, triggering the brake override system. Owners of 2002 Expeditions with the 5.4L engine have also reported power loss after replacing multiple ignition coils. Overheating can further exacerbate the problem, particularly in models like the F150 and Navigator, where upgrading the thermostat may help maintain optimal engine temperature. Fuel system issues, including a clogged fuel filter or pump problems, can result in power loss at high RPMs, and electrical connection problems, such as melted cables, may cause intermittent power issues. Regular maintenance and inspections of these components are essential for preventing power loss and ensuring optimal vehicle performance in high-temperature conditions.