One problem related to gas recirculation valve (egr valve) has been reported for the 2004 Ford Expedition. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Ford Expedition based on all problems reported for the 2004 Expedition.
Vehicle lost power for 3-5 seconds at highway speeds approximately 65 mph on three separate events. Vehicle slowed down due to power loss while in heavy traffic. Three other times at idle speed in drive and in park engine stalled and immediately restarted. Loss of power steering due to engine not running when stall event happened. I performed inspection of fuel pump relay which is internal to passenger side fuse block. Found inadequate solder joint on integrated relay printed circuit and burn marks on outside of fuel pump relay. Located salvage fuse block same make and model and inspected. Same damage on salvage fuse block assembly. Replaced with aftermarket fuse block with revised solder joint and updated relay.