One problem related to transfer case has been reported for the 2002 Ford Ranger. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Ford Ranger based on all problems reported for the 2002 Ranger.
(1) grinding noise coming from front transfer case on 4x4 drivetrain, noticeable at 30 to 40 mph. . Precent at all speeds more apparent at speeds described, at high speeds 40 to 80mph grinding noise masked by wind/road noise. Noise started at under 20000 miles on vehicle, vehicle currently has 27k miles and grinding/noise is more pronounced. (2) no apparent component failure yet, several Ranger 4x4 owners have this problem. (member of a Ranger forum of 1000+ members). Will it cause premature failure of front drive line components leading to crash and or death? (3) dealership is aware of the problem, only way to correct it is to use harder tires; dealer will not recommend goodyears which is what is installed by the factory.