One problem related to gas recirculation valve (egr valve) has been reported for the 2002 Mercury Mountaineer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Mercury Mountaineer based on all problems reported for the 2002 Mountaineer.
Three sets of goodyear, eagle LS tires, size p24570r16 (no dot # mentioned) with less than one hundred miles had to be replaced because knots were found on sidewall and tread. Dealer has been contacted. Engine light illuminated due to faulty dpfe sensor; air bag light on, air bag module replaced; loose rear center console; vibration and popping noise over bumps, replaced and balanced all four tires, replaced stabilizer bar links, rims were out of round; scrunching noise while turning, rack and pinion replaced; experiencing whistling noise; hard jerk and popping noise when shifting, gear selector slippage; a/c vent squeaking, a/c vent readjusted.