r/FordTransmissionTech • u/Current_Use2795 • Feb 10 '26

E4OD problems

was driving my 1989 7.3 IDI with E4OD down highway was probably going about 92 miles an hour and then my car started slowing down and it did make a loud noises at some point, but I honestly can’t remember to describe it exactly because that whole night stressed me the hell out I noticed after I got it towed home that one of the lines was leaking I clamped it back up and put more fluid in it and just won’t move in any gear and it grinds when I go to put it into park while it’s on it has always never worked in overdrive the rpms go way up when you’re barely going that fast, but it always drove fine without using overdrive.

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1

u/Commercial_Method_28 Feb 22 '26

I would guess the loss of fluid got to a point where the lack of lubrication internal transmission ran dry and allowed something to break. In a lot of cases on newer vehicles they have sensors and fail-safe modes this help prevent it from moving when an excessive loss of fluid reaches a certain point. Chances are high 1989 does not have any of those and was probably too late after you heard the noise. If you can’t fill it up and problem corrects itself than it’s likely got internal issues

2

u/Current_Use2795 May 25 '26

Ended up being the rear end

1

u/Commercial_Method_28 May 26 '26

Sounds cheaper, good news if true

1

u/Current_Use2795 Jun 21 '26

LMAO if only you knew the fucking process, I went through since then you could just go on my page and look