Troubleshooting Tips for the 4R44E & 5R55E Transmission

It’s time to dust off those cores! With the proper repair, these can be just like money in the bank. You no longer have to sort through cores trying to find “the one that works better than the one that came with the unit ” or, even worse, choose one that looks better in one bore but winds up building a new problem into the unit.

Application and identification:
The 4R44E was released in 1995 in the 2.3L and 3.0L Ford/Mazda rear-wheel-drive units. In 1996, with the 4.0L, the drive components were beefed up to become the 4R55E. In 1997 the unit became a 5-speed by applying the front servo to obtain an overdriven first and 5th. From that time on, it’s become either a 5R44E or 5R55E. Since 1995 there have been many valve body, plate or solenoid changes. Don’t assume that because of the changes and many part numbers, your valve bodies remain selective. By following our instructions you can obtain 100% application for both units. Figure 1 identifies the 5R vs. 4R separator plate. After rebuild, the casting can beused for either a 4R or 5R unit.

Complaints:
To start, it’s best to review the “3 Cs” listed for the different valvebody repairs for the 4R/5R units, which can be found on pages 110 through 115 of this catalog. It is important to remember that some complaints cannot be corrected by repairing only one area.

(Read More on Free Ebook at PDF Format)

Download Troubleshooting Tips for the 4R44E & 5R55E Transmission.pdf

Advertisement