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Water in ICM?!?
Help! My 97 F250 has been pulling and bucking when I reach ~60 mph. If I push through this, the engine smooths out to normal at 80mph. The behavior is similar to bad fuel in the engine. (My fuel is good). My mechanic pulled out the ICM and it was full of water! He had never seen this before. I have owned the truck for 8 years and have never had this problem before. THe truck has not been in a flood, tho we have pretty severe rainstorms. (?!?)
The ICM was replaced, but the problem is still here. He wants to look at the ECM next. The diagnostic tests don't show anything.
Any ideas??? I take it back to the shop tomorrow