The power seat adjuster has stopped moving the seat forward/backward but will adjust the seat up/down. I can't find anything obstructing its path. Is there a simple explanation for this? Jeep Liberty 2002.

Is it possible that switch has been installed upside down?

probably the switch-spray with wd40 or electric spray cleaner and wiggle it-if not gotta remove seat completely to check motor,etc

sounds like you might have a switch problem if the memory for seat position works ok. If you have a multimeter that checks for continuity then you could start there at the switch but you would also need a wiring diagram for the seats

To manually maneuver a power seat because the automatic feature malfunctions, carry out the following steps:
1. Turn of the engine, remove the batteries for safety reasons
2. Ensure that you have the following tools at hand-winder, screwdriver, pliers, knife, gloves, bolt cutters, and safety glasses.
3. Remove the entire rear seat
4. Cut the spring mesh below the seat with the bolt cutters-this will expose the shafts
5. Turn the shaft left to move the seat forward, and turn it right if you want to move it backward - keep turning until you get the desired position
6. Now test if the seat is in the correct position and put everything back in place
One of the many motors in your seat is not working properly, so it may need to be replaced. The problem may also be caused by faulty wiring or a blown-up fuse.

So here is a diagram of the seat circuitry for your car. Since every other function works except the forward/backward slide function, that leaves basically the forward/backward slide motor, the seat switch, and/or the wiring. If you can verify that the wiring under the seat is in good condition without obstructions, chaffed wires, and/or wires pulled too tight, then it's safe to say it's down to just the motor and/or the switch. Sometimes if the passengers front seat has the same switch, you can plug it in to the drivers' side connector and see what works and what doesn't. If the seat works fine with the other switch, then that's all it needs, if not then it will need a motor. If the other seat doesn't have a switch then you can find them at wrecking yards, or just supply power and ground to the motor in question to see if it works. If it does, then you know you kneed a switch and if not then a motor.
I hope this info helps!~subyguru~

The seat has a transmission to move the seat up, down, foward , & back. Screw jacks adjust the seat up & down. Cables move the seat forward & back. The cable it seems had to break or the end of the cable has rounded out. Possibly the cable rounded out the seat it rides in the transimission housing too. You will need to remove the seat to find out

Remove the seat by unscrewing the bolts which hold it to the floor of the car. Assuming it is not power you will see a cable operated by the handle you lift in order to intentionally move the seat. It has come loose on the end which pulls a dog out of the adjustment notches on the rail. You will need to fix it. If it is power seat then you are going to need another seat acquired in a junkyard or on craigslist. get this locally as the shipping will be ridiculous. many junkyards are now on line and you can search their inventory and see what other models and years have compatible seats with your vehicle.

If the seat is not moving forward or backward, but you do hear a click or a motorsound- chances are that you dropped in some change or other debris may be blockling the way. You might also have blown a fuse - look for fuse no. 30, which is a 30 Amp fuse.
Once you've checked all that and if the motor still does not run, then the problem may be with your wiring.
Wire colors between the switch panel and motor are:
• Fore/aft-Tan and Lt Green
• Front up/down-Dark Green and Dark Blue
• Rear up/down-Yellow and Light Blue
• Recline up/down motor's Blue and Light Green

I have a 2005 Jeep Liberty and the smae lever that tilts the seat also moves it forward and back. Press forward or back on the switch. Also check for blown fuse or a loose wiring connector under the drivers seat. Good luck, Techjoel

hi,seat motor are in maximum length,try to seat,then apply force backward also the switch in backward mode.