One problem related to manifold/header/muffler/tail pipe has been reported for the 1999 Ford Econoline. The most recently reported issues are listed below.
The consumer states that 1999 Ford Econoline 350 blew a spark plug at 60 mph. This blew out of the whole manifold. The consumer took the vehicle to a dealer, and the price that the consumer was quoted was around $2500. 00. The consumer was in contact with Ford. The consumer stated that Ford could care less. The vehicle was being repaired now by the dealership. The vehicle did not have any prior problems. It was regularly maintained by the consumer. The consumer believes this happened due to lack of thread on the aluminum cylinder head.