One problem related to gas recirculation valve (egr valve) has been reported for the 2002 Jeep Liberty. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Jeep Liberty based on all problems reported for the 2002 Liberty.
The first incident happened back when I first got my Jeep right before the warranty was about to expire. It was running fine and had no indication that anything was wrong. It was around the 35,000 mile mark. I was driving to work and my Jeep just stalled on me. I pulled off to the side of the road, tried to start it again, and nothing. So I called the dealership who told me to call the 800# for the tow truck (which took 2 hours at 20 degrees. . . . No heat. . . Not good). I found out that was actually a piston and a rocker-arm along with many other little parts that needed to be fixed in the engine. . . . . . . So major engine repair. The Jeep was in the shop for a couple of weeks. After it was fixed all was well. . . . . Until the breakdown from the recall. . . . That is my next complaint. . . . Stay tuned!!! :).