Ford E350 - 460 "hiccup"
UPDATE: Today I finally got to replacing the ICM. Boom. Fixed the problem. I found the replacement part at O'Rielly's and connected it, started the engine and within a few minutes knew the problem was...
Forum Discussion
I have a 1992 chassis with a similar issue. I can be driving along for 500 miles and all of a sudden it acts like it dropped into neutral. The engine revs as if not in gear, no increase in speed. It may do it three or four quick times in a row than not do it again for another 500 or 1000 miles. Recently I noticed that it seems to do it when the cruise control is on for a long time and it has done it several times shortly after the cruise control has been switched off. Newer cruise control module just installed and same problem. 79,000 miles on a 460 with recent tuneup. Mechanic has no answer.
