AW4 Solenoid Kit 1993-1998, remanufactured and ready to install. Fits the AW4. Ships fast from the USA.
A mid-90s Cherokee XJ with the 4.0L and AW4 automatic that holds second, skips overdrive, starts off in the wrong gear or never drops rpm into lockup on the highway usually has a valve body solenoid on its way out. This is a remanufactured set of the three AW4 solenoids, two shift solenoids and the lockup solenoid, tested and ready to bolt in for 1993-1998 trucks. The AW4 shares its solenoid design with the Aisin A340 family, which is why the set also carries an A340 reference.
On these years Jeep's factory manual describes a transmission control module that decides every shift and lockup event from throttle position, vehicle speed, park/neutral switch position and the brake switch. It does the work through three solenoids on the bottom of the valve body. Solenoids 1 and 2 switch in combination to sequence the shift valves through four gears; solenoid 3 feeds line pressure to the converter clutch through the lockup relay valve. The brake switch is wired into the converter clutch circuit and releases lockup every time the pedal is touched, which matters during diagnosis.
The 1996 model year brought a change worth knowing about: the AW4 gained an input speed sensor and the output sensor went from a one-pulse reed switch to a four-pulse magnetic sensor. A 1996-1998 truck therefore has more sensors that can throw a shift complaint than a 1993-1995, and its harness and computer must stay matched to that year.
The 1997 service manual has the TCM storing its own faults, read with Chrysler's DRB scan tool, and it notes a stored fault stays in memory even after the problem is fixed until the Trans fuse is pulled and reinstalled. A basic code reader may not show those, so do the electrical checks by hand. Measure each solenoid between its bracket and terminal; the spec is 11 to 15 ohms. Check the brake switch, because a misadjusted switch kills lockup exactly like a dead solenoid 3. Our guide to testing solenoids without a factory scan tool covers the meter and jumper-wire method. If the solenoids pass and shifts are still sluggish, look at the AW4 valve body.
This set is listed for 1993-1998 AW4 applications. That covers the 1993-1998 Cherokee XJ with the 4.0L six, and the AW4 was also used briefly in early 1993 Grand Cherokee ZJ models with the 4.0L before Jeep moved that truck to its own four-speed. The Comanche ended production in 1992, so it is outside this range. Solenoid layout did not change across these years, but compare connector shape and bracket angle with your old parts before installing, or send us your year and VIN. For 1989-1999 coverage see the 1989-1999 AW4 solenoid kit, and find every other part in our Aisin transmission parts collection.
While the pan is off, look for wet residue around the solenoid harness connector where it passes through the case; its adapter seal is a separate service item. A high-mileage truck with a heavy load history benefits from an auxiliary AW4 cooler, and one with a pan full of clutch material needs the AW4 rebuild kit, not just solenoids.
| Fits | AW4 1993-1998 |
| Part type | Solenoid Kit |
| Condition | Remanufactured |
| Brand | OEM |
| Reference | A340 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. The 1996 change added an input speed sensor and a new output sensor, but the three valve body solenoids keep the same layout. Compare the connectors and brackets with your old parts before installing.
Remanufactured. Each solenoid is a rebuilt unit, tested and ready to install, sold as a set of two shift solenoids and one lockup solenoid.
No. The brake switch is in the converter clutch circuit and releases lockup whenever it signals the pedal is pressed, so a misadjusted switch causes the same complaint. Test the switch and the solenoid resistance before replacing parts.
The factory manual says stored TCM faults stay in memory after a repair until you disconnect and reconnect the Trans fuse in the module harness.
Jeep specifies Dexron IIE/Mercon type ATF for the AW4. Approximate refill after a pan drop is 8.0 liters; set the final level hot in Park.
Only early 1993 Grand Cherokee ZJ models with the 4.0L used the AW4. Later ZJs use a different transmission, so send us the VIN to confirm.
