2004 Ford Expedition Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2004 Ford Expedition
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2004 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.
Intermittent rough idle may be caused by the EGR sensor sticking, causing the EGR valve to stay slightly open. Our technicians tell us the valve and sensor must be replaced together to correct this concern.
2004 Ford Expedition Questions"Charging Sustem Error" flickers on the dashboard. Any thoughts of my issues? (1 answer)
Been reading blogs that suggest withering harness. Others mention they have changed both the battery and altenator and had no resolution.