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Ford Explorer Community - Maintenance - Modifications - Performance Upgrades - Problem Solving - Off-Road - Street
Explorer Forum Covers the Explorer ST, Explorer Sport, Explorer Sport Trac, Lincoln Aviator, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Ford Aerostar
I have a vibration on my 94 explorer sport 4x4 we have changed shocks all the way around it and radius arm bushings and had rotors turned then we put new brakes on it so what could be my vibration
The most common source of high speed vibration is poorly balanced tires.
After that, I'd say check out the driveshaft and u-joints. If the driveshaft is completely rusted, with lots of scaly rust all over it, it could be slightly off balance, and cleaning it up might help. Old u-joints that are dry and falling apart, or even just worn down and no longer lubed enough can have slop and play that show up as vibration at higher speeds.
Just replacing the rear driveshaft joints will take care of the vibration at highway speeds, but replacing the front driveshaft joints on a 4x4 is a good idea too.
Your best bet is your tires. Most likely out of balance as Anime mentioned. If not that, run your hands along the tread of both tires (all the way around). If you have a belt separating and a noticeable (or feelable) bulge, that could be your problem. I went through a "rash" of Firestone tires with separating belts.
I had a similar vibration. couldn't get rid of it, even balanced the tires... finally replaced the tires and that fixed the problem... 2 of the old tires were out of round! (very slightly)
Best bet is to have your tires road force balanced they will probably charge more but in my experience it is well worth the money. I think all Ford dealers now have the road force balancer. It's a great machine and it will let you know if a tire is too bad to balance out correctly. Good luck.
