1998 ford expedition 4.8l w motor, misfire or surging issue?

1998 ford expedition 4.8l w motor, misfire or surging issue? - 1

This does this when truck is cold alot. Feel speeds of 55 -60. Now its at speeds of 45. Told it was coil issue. Replaced both of those, still same issue. No engine light coming on either. Had a full (long) block put in a couple years ago. Maybe some sensor

Hi well that is not a surprise really being that old and worn out old beast. What do you expect from a 17 year old car i really wonder.

FYI ford NEVER put a 4.8 L engine in expeditions. There's only 3 engines that have EVER been put in ford expeditions

4.8 L V8
Model years 1997 through 2004
16 valves

5.4 L V8
Model year 1997 through 2004
16 valves
Model year 2005 through 2014
25 valves

3.5 L "EcoBoost" twin turbo V6
Model year 2015 and later

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