5R55S Tcc Solenoid, new other (see details) and ready to install. Fits the 5R55S. Ships fast from the USA.
On a 5R55S or 5R55W you cannot buy the TCC solenoid on its own the way you can on older Fords. It lives inside the one-piece solenoid pack bolted to the valve body, so when a Mustang V6, Explorer, Mountaineer or Lincoln LS shows lockup slip, shudder at cruise, or a converter clutch code, the pack is the part that gets replaced. This is a genuine Ford pack, not an aftermarket copy. It was removed from a working transmission and function-tested before listing, and it carries the Ford numbers 9L2Z-7G391-AA and 4L2P-7G391-AA, cross-referenced to 9L2Z-7G234-AA and 4L2Z-7G234-AA. It suits a buyer who wants original Ford parts at less than new-part money.
The pack holds eight solenoids: four on/off shift solenoids, three variable force pressure solenoids (PCA, PCB and PCC) and one pulse width modulated TCC solenoid. When the PCM wants lockup it pulses the TCC solenoid, and that oil acts on the TCC modulator sleeve and the end of the TCC control valve. Once the control valve strokes, line pressure is modulated through the solenoid and sleeve to set how much the converter clutch slips. Sonnax notes that the TCC modulator bore is one of the first in the 5R55W/S valve body to wear, and that excessive TCC slip, converter failure and noise are common on these units. A weak TCC solenoid, a leaking pack gasket or a worn bore all show up the same way at the wheel, so it pays to check before you spend.
Pull codes and watch commanded versus actual slip in live data. A TCC electrical code with a bad reading through the case connector points at the pack. Look for fluid in the connector and broken harness pins too, since both set false codes. If the slip comes back with a good pack, the valve body bores or the converter itself are the next suspects. Our 5R55S lockup guide and the 5R55S shudder diagnosis walk through both checks.
This is the later pack design. An ATRA technical bulletin says Ford fitted the later pack to 2004-on 5R55W and 5R55S units and now recommends the updated 9L2Z-7G391-A design for them, while 2002-2003 Explorer and Mountaineer units and the 2003 Lincoln LS used the earlier 1L2Z-7G391-AG pack. Installing the wrong one can leave a 2-3 flare. That makes this pack the match for 2004-on Explorer and Mountaineer, 2005-2010 Mustang V6 and 2004-2006 Lincoln LS. If your vehicle is a 2002-2003, or a Thunderbird, read the number on your old pack and send it with your VIN before ordering. The pack does not fit the 5R55E Ranger or early Explorer. Other parts are on the 5R55 parts page.
If live data showed slip with a good pack, plan on a 5R55S valve body rather than a second pack.
| Fits | 5R55S |
| 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.
Not as a factory part. On the 5R55S and 5R55W the TCC solenoid is built into the one-piece solenoid pack, so the pack is replaced as a unit. That is what this listing is.
No. It is a genuine Ford pack removed from a working transmission and function-tested before it was listed, which is why it costs less than a new pack.
Possibly not. ATRA reports that 2002-2003 Explorer and Mountaineer units and the 2003 Lincoln LS used the earlier 1L2Z-7G391-AG pack. Check the number on your old pack and send it with your VIN before ordering.
Ford's procedure uses eight bolts at 71 lb-in (8 Nm) in sequence. Refill with Mercon V and check the level hot through the fill plug.
Only if the pack is the cause. Worn TCC modulator bores in the valve body and a damaged converter cause the same shudder, so confirm with live data and a fluid check first.
