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.
Resources for the Repair and Maintenance of your 2003 Ford Expedition
2003 Ford Expedition
2003 Ford Expedition Problems
The mass air flow sensor (MAF) may fail resulting in a rough engine idle, hesitation on acceleration, and/or engine stalling. The Check Engine Light may or may not illuminate. A failed mass air flow sensor will require replacement.
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.
An illuminated Check Engine Light may indicate that the spark plugs are worn; this will cause intermittent misfire and damage to the coil packs.
The PCV hose may crack, causing the vehicle to idle roughly, this may or may not illuminate the Check Engine Light.
2003 Ford Expedition Recalls (Recent)
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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.
2003 Ford Expedition Questions and Answers
my ford has been stalling for about 2 yrs now. they can never figure it out, started out while i was driving, it would just stall, kind of like flat line, then it started while i was at a stop lig...
side wall flat tire replaced front tire.should i replace the opposite tire?on will have 11111100% wear the other will have 67% wear.
What should the average cost be to have a leak in the transfer case repaired? Also, is the transfer case considered a part of the power train?
CD player does not play; it reads cd error.
2003 Ford Expedition Reviews
We got our 2003 Expedition from a friend with 204,000 miles on it last December; as a 3rd car for guests to use at our B&B. So far, it's worked well - I'm changing out the spark plugs this week (100,000 miles + on the old ones) and keeping an eye out for problems, but so far it's been a great "carriage" for us.
I bought my 2003 Expedition with 90,000 on it three years ago and it now has 155,000 on it. I absolutely love this vehicle! Handling is fantastic. Love the power it has. So far I have had to change an injector, two wheel bearings, and front brake assembly. The shocks are now going but let me tell you, I drive it fast and rough and it has taken the abuse magnificently. I would recommend it to anyone looking for a bigger more luxurious SUV.
I have a 2003 Expedition that I bought used in 2004, with 11,000 miles on it. It now has 110,000 miles and I still love it. I have had very few problems with it, and nothing out of the ordinary. WELL worth the tradeoff as far as gas mileage, this is the best vehicle I've ever owned. I'll drive it till it falls apart!