Governor pressure solenoid, pressure transducer, speed sensor, filter and pan gasket in one kit for 2001-2009 Dodge Ram and Jeep 42RE to 48RE units.
When a 2001-2009 Dodge Ram, a 2001-2003 Durango or Dakota, or a 2001-2004 Jeep Grand Cherokee with one of the Chrysler RE four-speeds starts in second, will not upshift, drops out of overdrive or flashes a governor code, the cause is usually one of four electrical parts on the valve body and tailshaft. This kit, maker part number TSV-1079-S-CS, puts all four in one box with the filter and pan gasket you need to get in there, and it ships fast from the USA.
For the first three gears these transmissions still shift hydraulically, the way the old TorqueFlite did. The difference is that the spinning governor is gone. The computer reads road speed from the output speed sensor and duty-cycles the governor pressure solenoid to build governor pressure, which pushes the 1-2 and 2-3 shift valves. The transducer measures the pressure that was actually produced and reports it back so the computer can correct it. Fourth gear and converter lockup are the only fully electronic functions, handled by the overdrive and TCC solenoids on the harness assembly. If the output speed signal disappears, the computer keeps governor pressure at zero, and the truck stays in first.
Scan for codes and, if your tool shows it, watch governor pressure and output speed on a test drive. Governor pressure should sit near zero at a stop and rise almost in step with road speed. Stuck high at a stop usually means a transducer or solenoid fault; zero while rolling with a dead speed reading points to the output speed sensor or its wiring. Our 46RE pressure control solenoid symptoms guide walks through the checks, and the speed sensor guide covers the tailshaft side. If the fluid is burnt and the unit slips in every gear, the problem is mechanical and solenoids will not fix it.
Listed fitment is 2001-2006 Ram 1500, 2001-2009 Ram 2500 and 3500 (including 5.9L and 6.7L Cummins trucks with the 47RE or 48RE), 2001-2003 Durango and Dakota, and 2001-2004 Grand Cherokee, across the 42RE, 44RE, 46RE, 47RE and 48RE. These are 2000-and-later style units; Sonnax splits RE valve bodies into '99-and-earlier and '00-and-later pressure sensor versions, so a 1999 or older truck needs a different kit such as the 1998-99 solenoid kit. Match the transducer and the overdrive/lockup connector to your old parts, or send us your year and VIN. More A500 family parts are on the 42RE/44RE collection page.
If the valve body itself is worn, a 2002-up Sonnax-updated valve body replaces it complete, and a 44RE master rebuild kit covers a full overhaul.
| Type | Governor pressure solenoid, transducer, speed sensor, solenoid and filter kit |
| Fits | 42RE, 44RE, 46RE, 47RE, 48RE (A500 family) |
| Vehicles | 2001-2009 Dodge Ram 1500/2500/3500, 2001-2003 Durango and Dakota, 2001-2004 Jeep Grand Cherokee |
| Includes | EPC solenoid, pressure transducer, speed sensor, transmission solenoid and gasket, valve body filter, oil pan gasket, spring |
| Replaces | 4617210, 52118652, 56028196AA, 68164850AA, 4800879, 52118789, 52118500AB |
| Maker part number | TSV-1079-S-CS |
| Weight | 1.9 lb |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes, it is listed for 2001-2009 Ram 2500 and 3500 trucks, including the 5.9L and 6.7L Cummins with the 47RE or 48RE. Match the transducer and the overdrive/lockup connector to your old parts before installing.
No. The listing covers 2001 and later, and the RE pressure sensor changed between the '99-and-earlier and '00-and-later valve bodies. Older trucks need a year-specific kit.
With no output speed signal the computer keeps governor pressure at zero, so check the speed sensor and its wiring first, then the governor solenoid and transducer. This kit replaces all three, so you are not guessing.
Not for the governor solenoid and transducer, which are in a housing on the valve body behind the filter, and not for the speed sensor. Replacing the overdrive/lockup solenoid assembly is easier with the valve body lowered.
ATF+4. Refill, run the engine, and check the level hot in neutral before driving.
