Engine RPM And Vehicle Speed Limiter
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The PCM limits the engine RPM by cutting off fuel whenever the engine RPM limit is detected. The purpose of the engine RPM limiter is to prevent damage to the powertrain. The RPM limit for the F-Super Duty is 3,800 RPM. The vehicle speed is limited to 153 km/h (95 mph) for the F250/F350 and F450 pickups (wide frame) and 130 km/h (81 mph) for the narrow frame F350/F450/F550 vehicles.