2001 Ford F250 7.3L Diesel Supplement 2nd Printing - Page 35

Minor troubleshooting guide IF THE ENGINE RUNS HOT The following could cause the engine to overheat: • Lack of coolant. • Dirty cooling system. • Driving with frozen coolant. • Sticking thermostat. • Overloading or pulling heavy trailers during hot weather. • Grill or radiator air blockage. • Slipping or missing drive belt. • Plugged or very dirty air cleaner element. IF FUSES BURN OUT Burned-out or blown fuses usually indicate an electrical short-circuit, although a fuse may occasionally burn out from vibration. Insert a second fuse. If this fuse immediately burns out and you cannot locate the cause, return your vehicle to your dealer for a circuit check. Replacement fuses and circuit breakers must always be the same rating as the original equipment shown. Never replace a fuse or circuit breaker with one of a higher rating. Higher rated fuses or circuit breakers could allow circuit overloading in the event of a circuit malfunction, resulting in severe vehicle damage or personal injury. Refer to the "Owner Guide" for replacement of fuses. 35