4R70W Pressure Control Solenoid 1992-1997, new and ready to install. Fits the 4R70W. Ships fast from the USA.
This is a new electronic pressure control solenoid for the early 4R70W, built for 1992-1997 transmissions and referenced as D76431. Buyers usually land here with a mid-1990s F-150, Mustang, Crown Victoria, Grand Marquis or Town Car that shifts lazily under throttle, bangs into Drive, or has set an EPC circuit code. The early solenoid is different from the 1998-and-later part, so the years on this page are the first thing to check.
The PCM controls line pressure by varying the current to the EPC solenoid. The solenoid's output oil pushes on the spring end of the pressure regulator valve, so the more EPC oil reaches that valve, the higher line pressure climbs. Low current means high pressure on this design, which is a failsafe: if the solenoid loses power the transmission still applies its clutches firmly.
What sets the 1992-1997 version apart is the adjuster. These early solenoids carry a 3/8 in. adjusting screw with a 5/8 in. lock nut, so base pressure can be set after installation. The 1998-up solenoid dropped that feature. If your old part has the adjuster and lock nut, you are in the right place.
Unplug the case connector and measure the EPC circuit. TeckPak's instructions for the 1992-97 solenoid give 2.48 to 5.66 ohms; near zero is a shorted coil and an open reading is a broken one. A good reading only proves the coil is intact, so follow it with a line pressure gauge. TeckPak lists roughly 50-75 psi at closed throttle and 160-210 psi at wide open throttle in Park, Neutral and Drive, with 80-120 and 220-280 psi in Reverse. Test cold and fully hot. Good cold and low hot points at a worn pressure regulator bore, not the solenoid. Our EPC solenoid symptoms guide covers the compressed air test that proves where the oil is going, and the 4R70W shift problem guide helps when the complaint might be a shift solenoid instead.
Fits 4R70W transmissions from 1992 through 1997. The same early solenoid design was shared with the AODE of those years, which is why you will also see it listed as the 1992-1997 AODE EPC solenoid. It does not fit 1998 and later units; for those, use the 1998-2004 4R70W EPC solenoid. Model years and transmission build dates do not always line up, so compare the connector and adjuster on your old solenoid, or send your year and VIN and we will check. Browse the full 4R70W parts collection for the rest of the job.
| Fits | 4R70W 1992-1997 |
| Part type | Pressure Control Solenoid |
| Condition | New |
| Brand | OEM |
| Reference | D76431 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. This is the early 1992-1997 adjustable-style solenoid. 1998 and later 4R70W units use a revised solenoid without the adjuster. Use the 1998-2004 version for those years.
For 1992-1997, yes, the AODE and 4R70W share this early solenoid design and it carries the same D76431 reference. Match the connector and adjuster on your old part to be sure.
TeckPak's instructions for the 1992-97 AODE/4R70W EPC solenoid list 2.48 to 5.66 ohms. Measure through the case connector with the harness unplugged.
Check it. With a gauge on the line pressure tap, compare to the 50-75 psi closed throttle and 160-210 psi wide open throttle ranges in Drive. Adjust one-sixth of a turn at a time if needed, then lock the nut.
Usually an O-ring rolled during installation. Pull the solenoid, replace the O-rings, grease the snout and reinstall.
