AODE Solenoid Kit 1998-2004, new and ready to install. Fits the AODE. Ships fast from the USA.
Plenty of parts catalogs still call every Ford 4R70W-family transmission an "AODE," and that is how this kit is listed. In practice, a 1998-2004 F-150, Expedition, Mustang, Crown Victoria, Grand Marquis or Town Car with this electronic 4-speed is a 4R70W, and the parts in this kit are the electrical service set for it. The listing photo shows a shift solenoid pack, EPC solenoid, TCC solenoid and lead frame, plus a transmission filter and a cork pan gasket - everything needed to do the job in one pan drop.
Two shift solenoids, SS1/A and SS2/B, sit together in one pack and choose the gear: 1st is SS1 on, 2nd is both off, 3rd is SS2 on, and 4th is both on. The EPC solenoid controls line pressure by sending oil to the spring end of the pressure regulator valve, and on this Ford design zero current means maximum pressure. The TCC solenoid locks the converter at cruise. On these model years the solenoids plug into a lead frame that carries the shared 12-volt feed to the case connector, so a cracked frame can take out several circuits at once.
Scan for codes and note which gear it holds. Unplug the case connector and measure each circuit: Sonnax lists roughly 20-30 ohms for each shift solenoid, 10-16 for TCC and 2-5 for EPC. A circuit with good resistance can still fail under load, so a scan-tool solenoid command test is better if you have one. Sonnax also lists solenoid regulator valve wear as a cause of erratic shifts, 2-3 neutral and no 2nd, which a new solenoid will not fix. Our shift solenoid testing guide lays out every failure by gear, and the 4R70W Explorer shift problems guide covers the same unit in the V8 Explorer and Mountaineer.
Listed for 1998-2004. Sonnax groups 1998-2008 case connectors as one generation, separate from 1997-and-earlier and 2009-later units, so this kit is not for a 1992-1997 transmission - for those, see the AODE solenoid kit for 1992-1997. Pan shapes also vary by application, so compare the included filter and gasket outline to your pan, and match your lead frame and solenoid connectors to the photos. If you would rather be sure, send us your year, model and VIN. The 4R70W/AODE parts collection has every other part for this family.
Drain the fluid, drop the pan, and remove the filter so you can reach the solenoid pack, EPC and TCC solenoids. Unclip the old lead frame from each solenoid, lift it out, and install the new frame and solenoids with fresh, lubricated O-rings - a rolled O-ring on the EPC is a common cause of low line pressure. Recheck every circuit at the case connector before the pan goes on, then install the new filter and gasket and refill with Mercon V. Clear codes and reset adaptive memory. If the wiring outside the case is heat damaged, the AODE internal wiring harness listing shows the earlier style for comparison, and a stubborn lockup complaint may need the 4R70W TCC solenoid sold separately.
| Fits | AODE 1998-2004 |
| Part type | Solenoid Kit |
| 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 4R70W grew out of the AODE, and many parts catalogs use the AODE name for the whole family. A 1998-2004 vehicle with this electronic 4-speed is a 4R70W, which is what this kit is built for.
Yes, the listing photo shows a filter and cork pan gasket along with the solenoids and lead frame. Compare the gasket outline to your pan before ordering, since pans vary by application.
No. Sonnax lists 1997-and-earlier case connectors as a separate generation. Use the 1992-1997 kit for those years.
No. The EPC is a low-resistance variable force solenoid that normally reads about 2-5 ohms, much lower than the 20-30 ohm shift solenoids. TeckPak lists 2.48-5.66 ohms for the earlier EPC.
Refill with Mercon V, clear all codes, reset the adaptive memory and road test through every gear at light and moderate throttle.
