5R55W Tcc Solenoid, new other (see details) and ready to install. Fits the 5R55W. Ships fast from the USA.
A 5R55W Explorer or Mountaineer that shudders as it settles into cruise, runs a few hundred RPM higher than it used to on the highway, or sets P0741 or P0743 has a lockup problem, and on this transmission the TCC solenoid cannot be bought or bolted in by itself. It is one of eight coils built into the solenoid pack that sits on top of the valve body. That is what this listing is: a genuine Ford 5R55W/5R55S solenoid pack, pulled from a working unit and function-tested, referenced to Ford 9L2Z-7G391-AA and 4L2P-7G391-AA. Every solenoid on it, including the TCC unit, is checked before it ships.
Transmission Digest describes the 5R55S/W control layout as four on/off shift solenoids, three variable force solenoids and one pulse-width-modulated solenoid dedicated to the torque converter clutch. The PCM ramps the duty cycle of that PWM coil up to apply the converter clutch smoothly and holds it there at steady speed, which locks the engine directly to the input shaft. When the coil weakens, its internal valve sticks, or the pack leaks oil between circuits, apply pressure wanders. The PCM sees converter slip that does not match its command, keeps trying, and eventually logs a performance code and gives up on lockup.
Not every lockup complaint is the pack. A converter with a worn clutch lining shudders no matter what the solenoid does, and the 5R55W's well-known servo pin bore wear causes slipping and P0735 that a new pack will not cure.
Check the fluid level and smell first; burnt fluid and friction debris mean the converter or bands are already damaged. Pull every stored code, then watch commanded versus actual TCC slip on a scan tool at a steady 50 mph. A TCC electrical code with a matching bad resistance reading through the case connector is a clean diagnosis. A slip reading that never comes down while the command is high can be the pack, the converter or a worn bore, so work through our 5R55S TCC lockup guide and the lockup shudder fix, which apply equally to the W.
ATRA's seminar notes split these packs by year. 2002-2003 Ford 5R55W and S units, plus the 2003 Lincoln, take the early pack, Ford 1L2Z-7G391-AG. 2004-and-later Ford units and 2004-2006 Lincolns take the later pack, originally 4L2Z-7G391-AA and updated to 9L2Z-7G391-A, which Ford says to use on those later transmissions. The part numbers on this listing match the later design, so it is meant for 2004-on 5R55W trucks: Explorer, Explorer Sport Trac and Mountaineer. Owners of a 2002 or 2003 should check the number on their old pack first. It does not fit the Ranger, which uses the 5R55E. Send us the year and VIN if you are unsure, and browse the rest of the family on the 5R55 parts page. Mustang and Lincoln owners with a 5R55S can use the matching 5R55S listing.
If the trans is getting a full freshen-up at the same time, a 5R55S/W shift kit is the usual companion, and a tired pump can be swapped for the 5R55W front pump assembly while the unit is out.
| Fits | 5R55W |
| Part type | Tcc Solenoid |
| Condition | New Other (See Details) |
| 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. On the 5R55W the TCC solenoid is built into the solenoid pack, so this is the complete OEM Ford pack with all eight solenoids, including the TCC coil. It is a tested pull from a working unit.
Check first. ATRA lists 2002-2003 Ford units on the early pack, 1L2Z-7G391-AG, and 2004-on units on the later 4L2Z/9L2Z pack this listing matches. Compare the number on your old pack or send us your year and VIN.
Typically P0741 for TCC performance or P0743 for a TCC electrical fault. If those appear with pressure control or shift solenoid codes, the pack as a whole is the likely cause.
Mercon V. Check the level hot through the fill plug after the install and after the first drive.
Clear the codes and let the PCM adapt. Drive through normal shifts and several steady-speed lockup cycles; the first few shifts may feel firm until it relearns.
