Two problems related to engine cooling system have been reported for the 1999 Ford F-350. The most recently reported issues are listed below.
The contact stated a spark plug ejected from her husband's vehicle. The spark plug caused damage to the engine and blew the cylinder head. The service dealer confirmed it. The dealer replaced the cylinder head. The replacement corrected the problem. The contact said this was the same problem as experienced in the investigation for the engine and engine cooling, NHTSA action number dp05005.
Transmission system malfunctioned, which while reversing and pulling a trailer, transmission overheated and burned out. Dealer redesigned the transmssion and cooling system. Vehicle was still experiencing the problem, and vehicle downshifted, it did not slow down the vehicle. Please provide further information. The vehicle is not equiped with mechanism to control vehicle's speed when descending steep grades. The transmission failed twice prematurely. The transmission also over heats under heavy load and when driving in reverse.