A while back a slight vibration started when I slow down almost to a stop it feels worse in the back seat on the floor boards. Last weekend I did brakes all the way around with new rotors on the rear now it is doing it when I go to take off with the wheels turned and more when I stop. But it doesn't do it all the time. I did a little reading last night on here and then I checked all the U-joints and the carrier bearing they all look good. I put the rear in the air and turned the drive shaft to see if I could hear anything grinding in the rear end and no noises but, I did notice that the drive shaft turned harder in reverse than going forward. I also looked and there was nothing touching the body like the downpipe. I put it in four wheel drive and took it out it doesn't change anything. I could also hear the transfer case engaging and disengaging. later this week I am going to get new tires so I will have the tires balanced then. but I was just wondering what I should do to further diagnose this issue next.
Vibration
- Thread starter bud0994
- Start date
little luke
New member
Stock down pipe? Reason I'm asking is I just had an issue with a thump/vibrating noise from my floor boards at times. It was the down pipe. Kicker was if I was on level ground it wouldn't touch the transmission support, but when I parked on an incline it was just enough for it to hit a bolt. This is with a 4 inch downpipe
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05wh250
New member
does yours have the stock limited slip? mine had a little shudder on take off every once in awhile, used fords additive 3 times never fixed it until i changed the fluid.
05wh250
New member
when you change it depending what oil you use you may or may not need the limited slip additive, it should say on the oil. also if you have a lift you can try shimming the carrier bearing down a little to see if that helps.
stroker2
Member
I had a lot of the same symptoms you do and it turned out to be the inner race of the front wheel bearing that supports the axle shaft. Pry on the axle shaft where it comes out of the tube and into the back of the hub. A little play is normal but a lot is not. Also turn your hubs to LOCK. if the vibration stops then this verifys the inner race being bad. Here is my thread when i went through this
http://powerstrokearmy.com/forums/showthread.php?t=22776
http://powerstrokearmy.com/forums/showthread.php?t=22776
stroker2
Member
piece of cake. Wheel off, caliper and rotor removal, pull hub apart (either c-clip or a few bolts), take washers out, loosen 4 nuts on the backside and an electrical plug and its done.
stroker2
Member
That should indicate the inner race on the wheel bearing unit which can be replaced seperately but i replaced the whole bearing because there were shavings throughout the unit bearing from that inner bearing race being eaten up. Also, if it has been vibrating for a while, your axle shaft may be worn down and need replacing. So change it asap. I would double check with the play AT the u-joint of the axle shaft just to make sure
