Hey Folks. I have a 1994 F250 7.3idi n/a with the e4od and this damn transmission has been causing me all kinds of trouble. A few weeks ago, while driving to work, the "OD OFF" light came on and wont turn off, it feels like its stuck in 4th gear and wont shift out of it. I can shift it into 1st, 2nd etc with the shifter just fine which is how I got it home. The tachometer stopped working as well. I read that this is most commonly caused by the engine speed sensor, so, I got in touch with a local idi owner (has a 93 f350) who let me come by and swap that sensor to see if it was causing the issue. I swapped it out but no change, still cant shift when in drive. Is there anything else that could be causing this? Anyway I can test to see if maybe a wire in the harness is broken, or something at the tachometer is broken? I plugged my obd1 scanner into it but it didnt read any codes. I am waiting on an LUK clutch, flywheel, and hydraulics for my ZF5 swap which I was not looking to do for a few more months, but it doesnt look like I have much of a choice.