One problem related to axle assembly has been reported for the 2004 Ford Explorer Sport Trac. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Ford Explorer Sport Trac based on all problems reported for the 2004 Explorer Sport Trac.
Vibration in drive train starts at 45 and continues through 60 mph. Dealer has checked all 4 wheels for balance, replaced rear driveshaft, replaced transfer case, and now wants to replace rear axle assembly. Front crankshaft seal has now started to leak engine oil.