This SUV has served me over 18 years without ever leaving me stranded! Sensor issues started about 8 years in but didn't affect the operation. Even with severe gasket leak the vehicle still manages to ride smoothly and reliably. Getting ready to retire it because of a/c issues but overall I would love to own this SUV all over again!
I have 144,000+ on this Expedition. Because of the weight, I feel safe driving in snow/ice. The AWD is excellent. The leather seats are still in good condition. The safety could be improved with side air bags. The oil pressure when first started during winter time is 20-30 seconds delayed. I corrected this by using less restricted KNN oil filter. I used Castrol synthetic 0/40 motor oil. Also, I do transmission fluid change every 2 years by draining only then load new fluid added with 1 jar of trans-X. Spark plugs and some little things have been updated. I know the gas mileage is bad, but it rewarded me with the safety and comfort.
Solder issue on the speedometer tachometer board causes odometer to go on and off. There’s a diy fix but you have to remove the dash to do it. Check your plugs every 5000 Miles. These 5.4’s like to spit out the spark-plugs.
This is a great family vechile ! we have had our expedition for 4 years now at 182,000 miles and its still going strong ! hardly ever has given us any problems since we have had it ! been the most reliable vechile that we have owned ! will continue to drive it an will rebuild it when it is that time ! cant go wrong with a 98 expedition !