4R70W Tcc Solenoid 2000-2003, new other (see details) and ready to install. Fits the 4R70W. Ships fast from the USA.
If your 2000-2003 Ford F-150, Expedition, Crown Victoria, Grand Marquis, Town Car or automatic Mustang has started to shudder at a light-throttle 45 mph cruise, the tach no longer drops when the converter should lock, or the scan tool shows P0741 or P0743, the torque converter clutch control circuit is the place to look. This 4R70W TCC solenoid listing covers the 2000-2003 range and is sold as new (unused, may not be in original packaging), with Sonnax as the listed brand. Be aware of what you are getting: the product photo shows a complete valve body with the solenoid body bolted on, meaning the TCC solenoid, both shift solenoids and the lead frame come as one assembly with the bores, valves and separator plate behind them.
The 4R70W picks its four gears with two on/off shift solenoids, SS1 and SS2. The TCC solenoid sits beside them on the same solenoid body and is not part of the shift pattern at all; in every forward gear its state is simply whatever the PCM commands. When the computer wants lockup, it pulses the TCC solenoid, which strokes the bypass clutch control valve in the valve body and sends apply oil to the converter clutch. A solenoid with a worn seat, or a bypass clutch control valve that has worn its aluminum bore, cannot hold steady apply pressure, so the clutch slips and grabs and you feel it as shudder through the floor. Sonnax lists bore wear at that valve as a cause of codes 628, 741, 1741 and 1744, no lockup and low cooler flow, which is why a fresh valve body often fixes a lockup complaint that a solenoid alone did not.
Check fluid level and condition first; burnt or varnished Mercon V will cause shudder on its own. Then measure the solenoid through the 8-pin case connector used on 1998-2008 units: Sonnax lists the TCC solenoid at 10-16 ohms. A reading out of range, or a short to the case, points at the solenoid or harness. If resistance is good and the PCM commands full apply but slip RPM stays high, the problem is either valve body bore wear or the converter clutch itself. Our 4R70W shift solenoid testing guide walks through the connector pin-out, and the Expedition common problems guide covers how lockup faults show up on the heavier trucks.
This range straddles a valve body revision. Sonnax notes that the 2-3 capacity modulator valve is not used in 2001 and later bodies, and several of its repair kits are specific to 2001-later castings, so a 2000 valve body and a 2001-2003 body are not machined identically inside. Ford also built the 4R75W from 2003. Before installing, lay your old valve body beside the product photo, compare the forging number below the stiffener plate, the solenoid body and the 8-pin connector, or send us your year and VIN and we will check it. If your truck is a 2000 model and you want the earlier body, see the 2000-only 4R70W TCC solenoid unit. Every other part we stock for this transmission is on the 4R70W collection page.
Drain the pan, remove the filter, unplug the case connector and loosen the valve body bolts evenly from the center outward so the casting does not warp. Keep the manual valve aligned with the detent lever as the new body goes up, and torque the valve body bolts to spec (Sonnax lists 106 in-lb for the plate bolts). Fit a new filter and pan gasket and refill with Mercon V; Ford advises against supplemental additives. Clear codes and drive through several lockup cycles to let the PCM relearn. If the old fluid was black or full of friction material, this is the moment for the 1998-2003 master rebuild kit rather than a valve body alone, and a 1996-2003 shift kit can be installed while the body is out.
| Fits | 4R70W 2000-2003 |
| Part type | Tcc Solenoid |
| Condition | New Other (See Details) |
| Brand | Sonnax |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The product photo shows a complete 4R70W valve body with the solenoid body installed, so the TCC solenoid comes already mounted along with the shift solenoids and lead frame. Compare it to your unit before ordering.
The listing covers 2000-2003, but Ford revised the valve body for 2001 and later. Match the forging number and solenoid body to yours, or send us your year and VIN so we can confirm the right version.
Sonnax lists 10-16 ohms for the TCC solenoid on 1998-2008 units, measured at the 8-pin case connector. Check the shift solenoids at the same time; they should read 20-30 ohms.
Yes. If the TCC solenoid tests good and the PCM commands full apply but slip stays high, the converter clutch lining or valve body bore wear is the likely cause. A valve body fixes the second; a worn converter needs separate repair.
Mercon V ATF, with a new filter and pan gasket. Ford cautions against adding supplemental friction modifiers or treatments.
