alright i just turned 18 i got a 99 ford explorer and when i drive it it makes a pop when i am driving. i think it might be the rear end is out but im not shure. it pos alot more to when i am in higher gears. i mean i can fix it if needed but i was wondering what else could it be so mabby i could have a cheaper fix. if any one can help me out it would be very appreciated