4R70W Solenoid Kit 1996-1997, remanufactured and ready to install. Fits the 4R70W. Ships fast from the USA.
A 1996 or 1997 Ford with a 4R70W that suddenly launches in a tall gear, refuses overdrive, or holds second no matter what the pedal says usually has a shift solenoid problem, and those are the complaints this remanufactured kit is built to fix. It is listed for the 1996-1997 model years only - the early part of the 4R70W run in the F-150, Expedition, Mustang, Crown Victoria, Grand Marquis and Town Car - and it is bench-ready, so it goes in as a tested unit rather than a box of parts you assemble on the fender.
The 4R70W picks its four forward gears with just two on/off shift solenoids, SS1 (also called A) and SS2 (B). Both on is 4th, both off is 2nd, SS1 alone is 1st and SS2 alone is 3rd. The PCM grounds each solenoid to switch it, and the solenoid in turn moves oil to a shift valve. Line pressure is handled separately by the EPC solenoid, and converter lockup by the TCC solenoid, all reached through one case connector. Because both shift solenoids share a single 12-volt feed, losing that feed drops the unit into 2nd gear - which is why a dead circuit feels like a truck stuck in a tall gear that still backs up normally.
Note which gear the vehicle is stuck in first; on this unit that alone tells you which solenoid and which direction it failed. Then check resistance at the case connector - each shift solenoid should read roughly 20-30 ohms per the Sonnax booklet - and if everything reads open from one shared terminal, suspect the feed or connector rather than the solenoids. A meter or scan-tool current check beats a test light, which will glow on a circuit too weak to pull a solenoid in. Our 4R70W shift solenoid symptoms and testing guide walks through the full fault chart and pinouts. If your complaint is soft or slipping shifts under throttle instead of a wrong gear, read the 4R70W EPC solenoid guide before buying, because that is a line pressure problem.
This listing is for 1996 and 1997 4R70W applications. Sonnax documents three case connector generations across this family - 1997 and earlier, 1998-2008, and 2009 and later - so a 1996-1997 part should not be assumed to fit a 1998-up unit. The listing photo shows the solenoid assembly mounted on its valve body casting; compare the photos against your own parts and match the connector style and any casting or part numbers before ordering, or send us your year, model and VIN and we will confirm it. For an earlier AODE, see the AODE solenoid kit for 1992-1997, and the 4R70W parts collection lists every other part we carry for this transmission.
On a 1996-1997 truck or car the wiring is now close to 30 years old, so inspect the case connector pins and the internal harness for heat cracking before you blame anything else. Fit new O-rings on every solenoid you install and lube them with fluid so none roll on the way into the bore. Drop the pan, replace the filter, and refill with Mercon V only - Ford's fluid chart lists Mercon V for the 4R70W and warns against additives. Clear codes, reset the adaptive memory, and road test through every gear. If the transmission is coming out anyway, the AODE overhaul kit for 1996-2002 covers the seals and frictions, and an aging converter clutch circuit is worth addressing with the AODE TCC solenoid at the same time.
| Fits | 4R70W 1996-1997 |
| Part type | Solenoid Kit |
| Condition | Remanufactured |
| 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 safely. Sonnax lists a separate case connector generation starting in 1998, so a 1998-2008 unit needs a kit built for those years. Send us your VIN if you are not sure which generation you have.
Often, but not always. Second gear is the default with both shift solenoids off, so a lost 12-volt feed, a bad case connector terminal, or a failed SS1/A can all cause it. Check the shared power terminal at the connector before replacing parts.
Mercon V. Ford's quick reference chart specifies Mercon V for the 4R70W and cautions against supplemental additives or treatments.
Clear the codes and reset the PCM adaptive memory, then drive through every gear at light and moderate throttle so it relearns shift timing. Expect the first few shifts to feel slightly different until it adapts.
It is a used core that has been rebuilt and bench-tested so it goes in ready to work. It carries the same 1-year warranty shown on the listing.
