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.
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.
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 QuestionsWhere is the GEM located? (1 answer)
I'm convinced that all of the crazy electrical things that have occurred (starter catching on fire, one headlamp not working, power windows intermittently not working, volume control changing the radio station, power seat intermittently not working) are due to a "wet" GEM. Been deal...
Been reading blogs that suggest withering harness. Others mention they have changed both the battery and altenator and had no resolution.