Two problems related to engine noise have 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.
I was on interstate 95 southbound when I heard a loud boom followed by a flapping sound I pulled onto the shoulder to see what happend when I noticed gas coming from the area where the spark plug was at I shut the car off and called for a tow.
Went out to warm up our Ford Expedition for work. Upon starting it heard a loud boom and the engine sounded loud. Had it towed to garage. Found out that the #7 spark plug blew out. For safety sake, Ford should admit to the defect in the engine, and issue a recall.