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Just replaced my upstream O2 sensors, due to poor fuel mileage from rebuilt engine. No check engine codes, just wanted to see if mileage would improve. On the old O2 sensors, I averaged 16.7 MPG per tank of fuel. I’m now averaging 19.6 MPG per tank with the new sensors. I drive the same...

Anybody replaced the driver side upstream O2 sensor on a 2002 Liberty Limited 4WD with 3.7 V6? Can’t figure anyway to get my hands on the plug to disconnect it from the harness. I can just touch it with my fingers if I go in from either the bottom, next to the catalyst or from the top by the...

Howdy JK forum, I just purchased a 2002 Liberty 3.7 limited with 4WD and auto transmission. It has a blown motor, but only cost $500. I’ve partially torn down the engine to see what went wrong, and so far I’ve found that all the coolant is in the oil pan, #4 spark plug is broken from some...

2005 Liberty Limited 4WD/automatic with 189000 mi. Has been working perfectly then suddenly I get a transmission temperature warning and jeep goes into limp mode, so I pull off road to parking area now it won’t shift into any gears. Towed it home and pulled only a P0700 code with my OBD2 code...

After crashing my 2002 Liberty, that never had fog lights, I got the front bumper (and wiring) from another 2002 that had factory fog lights. The wiring to the fog lights from the donor car is all part of the same harness as the headlights and front turn signals, so it plugs right into the body...

I've got a 2002 Jeep Liberty Sport 3.7L 4X4 that was recently crashed in the front, and both airbags deployed. I have just finished repairing the crash damage and bought a used set of airbags that also came with an airbag control module, that I'm not sure I need. 1) In searching the web for...