I have a 2002 Ranger 4.0 Automatic 4R55E. Will all 5R55E hookup without modification?
The 1998 (some 1997) and up 4.0l OHV or SOHC used the 5R55E. But you do need to use a 2001 to 2011 5R55E in a 2002 because they have the added ISS external sensor above the shifter. So, you are fine to use latest model you can find, but from a Ranger 4.0l or Mazda B4000, and 4×4, 2WD trans cannot be converted.
I have a 1995 Ranger 4.0 Automatic 4R55E. Will a 5R55E from a 2003 Explorer Sport Trac Work?
The 4R55E and 5R55E are internally the same transmission with the same solenoids. The 5th gear was done by computer software activating OD while still in 1st gear to get a split ratio faux 2nd gear. So, the 5R55E will operate as a 4-speed same as 4R55E does.
There will be (2) extra sensors on the 5R55E; one just above shifter, it doesn’t need to be used on a 1995, and one at the rear driver’s side for output shaft speed, also not needed in 1995.
Your speedometer info comes from 1995 transfer case VSS sensor
I think you will need to use your 1995 DTR sensor, it’s on the shifter shaft of trans, not sure if the 2003 will be wired the same, but have a look.
If this is your first automatic install one important step to NEVER forget is to install the torque converter inside the bellhousing FIRST, and get it fully seated into the pump and input shaft, spin it and push in, it will slide back farther 2 times as it seats on the pump and shaft. Then you can install the transmission to the engine block.
The bellhousing should go flush to the block. NO FORCING them together using bolts. You WILL break the pump and that will be the end of that transmission.