Water in ICM?!? - Ford Powerstroke Diesel Forum
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Old 08-19-2013, 03:24 AM
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Unhappy 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
Susan
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Old 08-19-2013, 06:03 AM
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I think you're talking about an IDM, and if your mechanic hasn't seen water in one, or can't retrieve codes form your truck, he has very little experience with the 7.3 (you might be better off taking it elsewhere...)

It's not at all uncommon for water to get into the IDM, also a water leak at the lower corner of the windshield will commonly leak into the ECM. BUT, your guy should have the right scanner (you need a professional one, NOT a common OBD-II) and should be able to find codes that would Obviously be present with a water-laden IDM

Don't let him just start "Throwing Parts" as his solution, at YOUR expense, because he lacks experience with these engines....
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Old 08-19-2013, 07:04 PM
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Thanks for your help. Unfortunately, this guy is the "diesel expert" in Helena, MT. He's going to try a salvaged ECM next to see if mine is also full of water. Already in 7hrs of labor cost plus parts, I think they are guessin'.

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Old 08-20-2013, 09:52 AM
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Idiots.......................dealer could have figured it out in 10min.
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