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Hello, The tranny in my 99 ranger 3.0 2wd truck crapped itself, no more reverse. So I found a trans locally that was supposed to be from a 3.0 ranger. The picture is the trans that I bought. It has 2 extra electrical connections on it, circled in green. Mine in the truck only has the 2 circled in red. Is this going to work or not? Thanks
Ok So I did a little more research. I confirmed with the seller that it was a 3.0 ranger, but I'm guessing it was a newer model? So it is a 5rXX ? Will it still work.
Just trying to learn more, why won't it work? Same bellhouse pattern, my truck has the vss in the rear axle. Would it not shift? I understand it wouldn't have the extra gear down low between 1 and 2? Thanks
I couldn't find the article online, so here is the text of the article mentioned in the thread:
VMTP NEWS
New Ford Transmission
5R44E & 5R55E
Courtesy of Bob Cherrnay
Technical Editor - Transmission Digest
Beginning with the start of production for 2001, Ford Motor Co. introduced a new-model transmission with the designation 5R44E, a five-speed transmission that replaces the previous-design 4R44E. This new 5R44E model, like the 5R55E transmission, has an added intermediate-shaft-speed (ISS) sensor.
Changes were also made to the PCM strategy, which now includes shift-adaptive pressure-control strategy. The 5R44E transmission is used in 2001 Rangers with 2.3L and 3.0L engines, and the new design 5R55E transmissions are in the Ranger, and Explorer models with 4.0L engines.
The 5R44E transmission was added to establish a commonality among transmission models, and the ISS sensor was necessary for the new PCM shift-adaptive pressure-control strategy. Some parts changes have been made to these new units. NONE of the parts listed are interchangeable with the previous design level parts.
Transmission Case - New transmission case casting, and machining to accommodate the added ISS sensor.
ISS sensor - This provides additional information for the PCM to determine various incremental pressure changes to minimize the difference between the actual, and ideal shift timing for shift-adaptive pressure control strategy.
Sun Shell - Now manufactured with windows, and used to trigger the added ISS sensor.
Powertrain Control Module - Operational changes that includes shift-adaptive electronic-pressure-control strategy.
Shift-Adaptive Electronic-Pressure-Control Strategy-
This strategy allows for improved control over the transmission shift events. On the basis of various input signals, the strategy calculates an actual shift time, and compares it with an ideal shift time. Once the vehicle is up to operating temperature, incremental pressure changes are made to minimize the difference between actual, and ideal shift times. Over time, the adaptive learning process will fully update keep-alive memory (KAM). The more varied the driving habits, the longer the update will take. However, the adaptive learning process will also be more complete. Adaptive pressure control strategy is capable of adapting upshifts, closed-throttle downshifts, and garage shifts. For diagnosis of the ISS sensor see below.
If for any reason the vehicle loses power to the KAM, the transmission will return to its present level. Reasons for this happening are a disconnected or fully discharged battery, PCM disconnected while the battery is still connected, or updated calibration programmed into the PCM.
5R44E/5R55E added diagnostics, and trouble code chart:
DTC Description Symptom Possible causes
P0791 ISS sensor failure
[signal loss]
Harsh 2-3 shifts ISS sensor or wiring
P0794
ISS sensor signal
intermittent
Harsh 2-3 shifts ISS sensor or wiring
P1636 SSx ISIG
communication error
None
Replace PCM
Your trans can most likely be repaired for low cost. These are bad for the valvebody gaskets blowing out at the reverse servo. When that happens the pressure for the servo just gets dumped back into the pan.
Your trans can most likely be repaired for low cost. These are bad for the valvebody gaskets blowing out at the reverse servo. When that happens the pressure for the servo just gets dumped back into the pan.
When the reverse went, my dad was backing up in the driveway when he heard and felt a bam. He got out cause he thought he hit something. Nothing there, got back in and no reverse. Gasket or reverse band breaking?
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