1991 4 Wheel drive ford explorer repair Source Source Source Source Source Source Source Source Source Source Read Also: 1991 Ford explorer repair 4 wheel drive front hub 1991 Ford explorer 4 wheel drive problems 1991 4 Wheel drive ford explorer 1991 Ford explorer 4 wheel drive problem 1991 Ford explorer 4 wheel drive wont engage 1991 Ford explorer 4 wheel drive not working