AODE Pressure Control Solenoid 1998-04, new and ready to install. Fits the AODE. Ships fast from the USA.
This listing is named for the pressure control (EPC) solenoid, but the photo shows a complete electrical set for a 1998-2004 AODE/4R70W: the EPC solenoid, the two-solenoid shift pack, the TCC solenoid and the molded lead frame that ties them to the case connector. That makes it a fit for F-150, Expedition, Mustang, Crown Victoria, Grand Marquis and Town Car owners chasing harsh engagements, sliding shifts or EPC codes who would rather refresh every solenoid during one pan drop. If you only want the single EPC solenoid, the lower-priced AODE pressure control solenoid 1998-2004 is the one to buy.
With no throttle cable, line pressure is the computer's call. It drives the EPC, a variable force solenoid, and the oil it sends acts on the spring end of the pressure regulator valve. Sonnax notes that the factory boost valve only adds pressure in Reverse, so every bit of forward line rise depends on EPC oil reaching that valve. Ford's design is fail-safe high: no current means maximum pressure. The other parts in the photo handle gear selection (SS1/A and SS2/B in the pack) and converter lockup (TCC). On these years they plug into the lead frame rather than a loose harness, and a cracked frame or loose terminal can knock out several circuits at once.
Scan codes and watch commanded EPC pressure on a drive; it should rise smoothly with the pedal. At the case connector Sonnax lists 2-5 ohms for the EPC and 20-30 ohms for each shift solenoid. A gauge on the line tap tells you whether pressure actually follows the command. Pressure that is normal cold and drops hot usually means pressure regulator bore wear, which Sonnax warns can hide in the casting. Transmission Digest's air test through the TV port confirms it, and no new solenoid fixes it. The full process is in our 4R70W EPC solenoid guide, and the Expedition common problems guide shows how these faults present in the heavier trucks.
Listed for 1998-2004. Sonnax groups 1998-2008 case connectors as one generation, distinct from 1997-and-earlier and 2009-and-later units, and our solenoid testing guide notes that lead frame units and later soft-wire units are not interchangeable. Pull your pan and confirm your valve body uses a molded lead frame shaped like the one in the photo, and match the solenoid connectors. Pan shapes differ between applications, so reuse or source the filter that matches your pan. Not sure? Send your year, model and VIN. Every other part for this family is on the 4R70W/AODE collection page.
Drain and drop the pan, remove the filter, then unclip the lead frame from each solenoid and lift the assembly out as a unit. Fit the new solenoids with ATF-lubed O-rings, seated straight; TeckPak warns that a rolled EPC O-ring bleeds pressure. Seat the new lead frame, ohm every circuit at the case connector before the pan goes back on, and refill with MERCON V. Clear codes, reset adaptive memory and confirm line pressure with a gauge. If the gauge shows a worn regulator circuit, an AODE shift kit is the usual companion repair, and units with harsh 1-2 or 2-3 shifts often need the servo and accumulator piston kit as well.
| Fits | AODE 1998-04 |
| Part type | Pressure Control Solenoid |
| Condition | New |
| 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.
The photo shows the EPC solenoid together with a shift solenoid pack, TCC solenoid and lead frame. If you only need the EPC, the separate 1998-2004 pressure control solenoid listing is the single part.
Harsh engagements and firm shifts with P1746 or P1747, or soft, slipping shifts with little line rise under throttle. Worn pressure regulator bores cause the same slipping, so test before replacing.
No. Sonnax lists 1997-and-earlier case connectors as a separate generation, and those units do not use this lead frame.
TeckPak lists 50-75 psi at closed throttle and 160-210 psi at wide open throttle in Park, Neutral and Drive for the AODE/4R70W, with higher figures in Reverse.
MERCON V, per Ford's fluid chart for the 4R70W family. Do not add friction modifiers or other additives.
