I wouldn't argue the converter idea... I doubt it's the IAC motor though as that will only be a problem at idle. Once you're off anf running it shouldn't matter. If it was a bad fuel pump or plugged filter it will be running lean. Running lean WILL throw a code, and will put the engine light on. The only other though I'd have is simply a loose battery connection. Mabey it got loose. Mabey it got tight again. If it was loose enough that the computer lost it's settings, then it would have to 'relearn' itself, and it will misbehave for a while when it's relearning... That's a long shot though. Sounds like a converter issue. I'm not sure about dropping the pipe handy the engine though. Those buggers have an O2 sensor handy the converter... so a lack of flow or abnormal flow over one sensor as opposed to the other 3 might set off some codes or other symptoms.
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Today's Featured Article - Restoration Story: 1964 JD 2010 Dsl - Part 2 - by Jim Nielsen. Despite having to disassemble the majority of my John Deere 2010's diesel engine, I was still hopeful I could leave the engine-complete with crankshaft and camshaft-in the tractor. This would make the whole engine rebuild job much easier-and much less expensive! I soon found however, that the #4 conrod bearing had disintegrated, taking with it chunks of the crankshaft journal. As a resul
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