46RE Tcc Solenoid, new and ready to install. Fits the 46RE. Ships fast from the USA.
A 2000-or-later Dodge Ram, Dakota, Durango or Jeep with the 46RE that will not lock the converter, revs high at highway cruise, never finds fourth gear, or flashes the check engine light with P1740 usually ends up needing the part this kit is built around. On the RE family the torque converter clutch solenoid is not sold as a lone plug-in part: it shares one assembly with the overdrive solenoid and the internal wiring harness. This is the complete late-style electrical set, so every solenoid and the governor sensor inside the pan are new at once.
The kit is listed for 2000-and-later A500 42RE, A518 46RE, A618 47RE and 48RE units.
The 46RE shifts first through third hydraulically, steered by governor pressure. The two on-off solenoids on the harness assembly handle everything above that. The overdrive solenoid does one job, the 3-4 upshift. The TCC solenoid applies the converter clutch by moving the switch valve, which redirects converter feed so the clutch can clamp to the cover. Both get 12 volts through case connector pin 1 from the transmission control relay, and the PCM switches each one on by grounding it. If the TCC solenoid or its circuit fails, the converter keeps slipping at cruise: rpm sits a few hundred higher, fluid temperature climbs and fuel economy drops.
Start the engine before testing. On these units the relay coil only gets power with the engine running, so key-on-engine-off with no voltage at the solenoids is normal. Measure both solenoid windings at the case connector; ATSG lists 25 to 40 ohms for the overdrive and TCC solenoids in this family, and the two should read close to each other. A dead open or short condemns the assembly. Two causes get a good solenoid replaced by mistake. First, a restricted cooler circuit, which Sonnax calls the most common cause of 740 and 1740 complaints, so bypass the cooler and retest. Second, some 2000-2001 Rams, Dakotas, Durangos and Ram Vans set P1740 because a reducing-pressure exhaust orifice in the boost valve cover plate is too small, a fix Transmission Digest documented as drilling it to 0.069 inch. Our 46RE shift and TCC solenoid guide has the full test order, and the cooler line guide covers the restriction side.
This assembly is the late, fourth-design style with the rectangular transducer connector, listed for 2000 and later. ATSG notes the late design does not retrofit earlier trucks, and some 2000 models left the factory with the earlier parts, so match the transducer connector shape and the harness plugs to what you remove, or send us your year and VIN. For 1996-1999 trucks use the 1996-99 46RE TCC solenoid. The full lineup is on the 46RE parts page.
| Fits | 46RE |
| Part type | Tcc Solenoid |
| Condition | New |
| Brand | OEM |
| Reference | A518 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Not practically. The TCC and overdrive solenoids are part of the internal harness and case connector assembly, so the whole assembly is replaced. This kit also adds the governor solenoid and transducer.
No. This kit is the 2000-and-later design with the rectangular transducer connector, which does not retrofit earlier trucks. Use the 1996-99 version for those years.
Not always. Check for a restricted cooler first, and on 2000-2001 trucks check the boost valve cover plate orifice. Measure the solenoid windings at the case connector before replacing anything.
ATF+4. Set the level with the fluid hot, engine idling, in Park on level ground.
No programming is required. Clear codes, road test through several lockup cycles and confirm the converter applies and rpm drops at steady cruise.
