2003 Ford Expedition Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Ford Expedition
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2003 Ford Expedition ProblemsIgnition Coil Failure Due to Excessive Spark Plug Gap
An illuminated Check Engine Light could indicate that one or more of the ignition coils has failed due to excessive spark plug gap. To fix this problem, the ignition coils that have failed, the spark plugs, and all coil boots should be replaced.
The PCV hose may crack, causing the vehicle to idle roughly, this may or may not illuminate the Check Engine Light.
There is a technical service bulletin for the V8 engines regarding a possible problem with the spark plug being ejected from the cylinder head, damaging the threads in the spark plug hole. If the vehicle is under warranty, cylinder head replacement is recommended. If the vehicle is out of warranty, Ford authorized the use of a specific thread insert to repair the head.
2003 Ford Expedition QuestionsNew spark plugs and coils cranks over but stalls (1 answer)
Fuel pump is good has new spark plugs and new coils fused are good as well ..what else could it be ...
Battery dead. When I jump it it cranks. If I leave it in park its runs for a few minutes then everything dies and I have to jump it again.... But when I put it in drive after starting, no matter if I floor the gas pedal, the revs rapidly decrease and it dies after driving about 10 yards.... What ...
2003 Ford Expedition RecallsVehicle With Installed Southern Comfort Running Boards Recalled Due to Board Lamp Failure
The courtesy lamps on affected running boards may overheat when exposed to moisture and road salt. Overheating may cause the lamps and boards to melt or start a fire. Dealers will replace the wiring harness for these running boards.