E-250 5.4 Failure

kurtwp

Armchair Adventurer
I wouldn't doubt the 123k mileage then it quit. Had V10 2008 E450 and V10 2010 E350 both engines were replaced around the 130K mileage.

Kurt
 

Bbasso

Expedition goofball
It's not a spit plug they still run. It's not a slipped belt because there's plenty of momentum to overpower it.
The only two things I can think of is either one of the wrist pins broke loose and locked it up or it over fueled and hydrolocked then broke an internal part.

Oh one more thing could be a culprit the flex plate broke and can't spin.
The last one is easy to check take off the torque converter dust shield and look in there. Also try turning the flex plate with the proper tool not just a screwdriver.
 

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