Complaint:
Shortly after a fluid and sump filter change, whether part of a service or overhaul, the transmission begins to exhibit delayed engagements or a no move condition. There might be a number of codes stored including but not limited to the following:
P0868 - Line Pressure Low
P0944 - Loss Of Prime
P0731 - Gear Ratio Error in First Gear
P0736 - Gear Ratio Error In Reverse
P0841 - Low Reverse Pressure Switch Rationality
P0876 - UD Pressure Switch Rationality
Cause:
One cause might be that a substandard filter with a loose fitting filter neck to pump seal was used. After the vehicle cools off from being driven, the filter neck drops down out of the seal causing the pump to suck air. Another cause might be that the wrong filter was installed. Read Service Information.
Correction:
Install a good quality filter and ensure it is the correct one according the information listed below in Service Information.
Note: If so desired, as a backup, a bracket can be fabricated and held down by one of the valve body bolts to retain the filter next to the valve body. This will prevent the filter neck from popping out of the pump. If time constraints prevent fabricating a bracket, a dip-stick stop bracket from a 4l60-E transmission can be used.
Service Information:
All 4x4 applications of RFE transmission use the 4x4 style filter. All 2x4 applications in the 1999 to 2007 model years used the 2x4 style filter. For the 2008 model year two-wheel drive transmissions in the Dodge Dakota only used the 4x4 filter and pan. In 2009 as a running change some RFE applications use the 4x4 style filter and pan. Some 1999 to 2007 factory reman transmissions may have the 4x4 filter and pan.
For 2010 and Later RFE transmissions the 4x4 style filter and pan will be used for all applications. Some RFE transmissions may have a new common oil pan and can be used with either filter.
Chrysler Two Wheel Drive Sump Filter..........................................................05015267AD
Filtran Two Wheel Drive Sump Filter.........................................................................F-322
Chrysler Four Wheel Drive Sump Filter.........................................................05013470AD
Filtran Two Wheel Drive Sump Filter.........................................................................F-304
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