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so my 1992 F-250 7.3 4X4 has a very intermittent issue with the E40D. Rarely, usually after a lot of around town driving (I don't know if that has any direct correlation), I will get a rough shift from 1-2. It will kind of bang into gear and make the whole truck shudder. On one of it's episodes, it also did it in 2-3, however that only happened once and I haven't been able to make it do that again. I'm worried that it's something that I should address, if I can do so without just rebuilding the whole transmission. It doesn't slip and shifts fine most of the time, other than the occasional 1-2 issue.
To cut this short, does this sound like a 1-2 accumulator issue? Maybe just old truck syndrome?
I feel like this is a dumb as hell question, but isn't it a bad idea to install a shift kit in an E40D with 126K miles on it?
Maybe, maybe not. The PCM will store error codes when something is wrong. When it stores codes it flashes the OD OFF light to tell you there are codes. You probably have codes stored and you need those codes to diagnose what's wrong. Get them read. The auto parts stores CANNOT read these codes, it takes either a good independent shop or a Ford dealer.