48RE Governor Pressure Solenoid 1993-97, new and ready to install. Fits the 48RE. Ships fast from the USA.
When an older Dodge Ram or Jeep with an RE-family automatic pulls away in second, hangs in first until the engine is wound out, or will not kick down on a hill, the electronic governor is the first system to check. This listing is a heavy-duty solenoid service kit labeled for 1993-1997 and the 42RE, 44RE, 46RE, 47RE and 48RE family. It is not a single solenoid: the photo shows a governor pressure solenoid, a governor pressure sensor (transducer), an output speed sensor, the overdrive and converter clutch solenoid assembly with its harness, a pan filter, a pan gasket, a governor gasket, an upgraded 3-4 accumulator spring, an upgraded lock-up spring and a heavier boost valve spring retainer. The 48RE name is a family label; the 48RE itself did not appear until 2003.
The governor's job is to tell the valve body how fast the vehicle is going so the 1-2 and 2-3 shift valves move at the right time. Early TorqueFlites did that with a weighted governor spinning on the output shaft. From the mid-1990s Chrysler replaced it with an electronic system: the PCM pulses the governor pressure solenoid to bleed line pressure down to a governor pressure that tracks road speed, the transducer reads what was actually produced, and the output speed sensor gives the computer the road speed it is aiming for. If any of those three pieces lies to the others, shift timing goes wrong. That is why this kit replaces all three at once instead of one part at a time.
Two things can mimic a bad governor solenoid. Worn 1-2 and 2-3 governor plug bores in the valve body leak governor oil and cause early, late or shuttling shifts no matter how good the solenoid is. And on a high-mileage unit, burnt direct or overdrive clutches can feel like a shift-timing problem at first.
Read the codes, then check the fluid hot with the engine idling in Neutral. Dark fluid with friction material in the pan means internal damage that this kit will not cure. If the fluid is healthy, a 100 psi gauge on the governor pressure test port tells the story: governor pressure should sit near zero with the vehicle stopped and rise steadily as speed climbs. Pressure stuck high at a stop or flat at every speed points to the solenoid, sensor or their wiring. The RE overdrive and converter clutch solenoid testing guide covers the electrical checks for the other solenoid assembly in this kit, and the shift problems guide walks through the rest of the diagnosis.
The year range on this listing starts in 1993, but the electronic governor pressure solenoid and transducer were only used on RE-family units built from 1995 on. Earlier transmissions, including the 46RH and 47RH units in 1994-1995 Ram trucks, have a mechanical governor on the output shaft and no governor solenoid at all, so this kit does not apply to them. Look under the valve body: if you see a governor body with two plugged-in electrical parts bolted to the transfer plate, you have the electronic system. In practice the best match inside this range is a 1996-1997 Ram or Jeep with a 42RE, 44RE, 46RE or 47RE. Because sensor connectors and solenoid screens changed during production, compare each part with your old pieces, or send us your year, transmission and VIN and we will check it. A Ram from 1998-1999 should look at the 1996-99 governor solenoid set, and 2000-up trucks at the 2000 version. Everything else for these units is on the 48RE and RE-family collection page.
If the valve body bores are worn or the unit has had several heat events, pairing this kit with a replacement 1997-2002 RE valve body fixes the hydraulic side at the same time.
| Fits | 48RE 1993-97 |
| Part type | Governor Pressure Solenoid |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. The 1994-1995 Ram 46RH and 47RH transmissions use a mechanical governor on the output shaft and have no governor pressure solenoid. This kit is for RE-family units with the electronic governor, which started in 1995 production. Send us your VIN if you are not sure which you have.
Per the listing photo: governor pressure solenoid, governor pressure sensor, output speed sensor, overdrive and converter clutch solenoid assembly with harness, filter, pan gasket, governor gasket, 3-4 accumulator spring, lock-up spring and a boost valve spring retainer.
It is one of the most common causes on the RE four-speeds. Governor pressure that stays high at a stop keeps the shift valves upshifted. A gauge on the governor pressure port and a code scan confirm it before you spend money.
Not for the governor solenoid, sensor, speed sensor or filter. The governor body is reachable with the pan off. The accumulator spring, lock-up spring and boost valve retainer upgrades do require removing the valve body.
Use Mopar ATF+4 or a fluid licensed to that specification, and check the level hot with the engine idling and the selector in Neutral.
