One problem related to ignition has been reported for the 2003 Ford Expedition. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Ford Expedition based on all problems reported for the 2003 Expedition.
Coil pack went out on my 2003 Ford Expedition @ 36,200 miles, 200 miles out of warranty. Dealer would not make exception and cover.