One problem related to engine stall has been reported for the 2006 Ford E-450. The most recently reported issues are listed below.
The contact owns a 2006 Ford e450. During rainy weather conditions, the engine will not turn on. The engine also stalls if it begins to rain while driving and will not restart. The speed was not a factor. Each time the failure occurred, the vehicle was towed to the Ford dealer and after a few days they were able to restart the engine. The mechanics have not been able to diagnose the failure. The VIN was unavailable. The failure mileage was 9,000 and the current mileage was 15,333.