I have a 1995 F250 4x4 with an E40D that when under load was shifting oddly so I took it into the Ford dealer and they explained to me that it is going into a "Safe Mode" as to not overheat, or... basically your tranny is on its way out.

I came across an E40D out of a 97 F250HD 4x4. My question is, is there any difference between these two transmissions? I am doubting it since I believe 97 was the last year of them so I can't seem them making any changes that late in their life.

Any thoughts, or problems you think I will be running into?

Thanks.

 

Not an expert but can`t see any reason the swap wouldn`t work, provided both transmissions are off the same engine family. For instance you can`t bolt a diesel trans to a gas engine.
So your own trans went into limp mode. Have you pulled the codes? Are you sure it is not a sensor problem?

 

Definitely pull the codes before spending money on parts.

 

Never thought of a sensor problem. Pardon my ignorance, but what does pull the codes mean? There is not light coming on the dash. Thanks.

 

The computer that controls the operation of the transmission is supplied with information by an array of sensors. The computer also monitors the operation of the sensors and the transmission. When a fault occurs the computer stores a numbered trouble code which, when read with a scanner or code reader, can help to identify the problem.
Usually with the E4OD the overdrive light will flash at some stage to show that the computer has stored a code.

 

The 97 will have 9 wires on its connector from the PCM/ECU. The 95 will most likely have 8. There have been discussions on how to get around this, but I cannot remember any thing definitive.