Pinion Seal and wierd vibration!

[Beast Mode]

My pinion seal is leaking and I have a wierd vibration in my dash where the center console meets the center dash piece. When driving between 20-55MPH. I was wondering if the bad pinion seal would cause this or is there something else wrong also I drove my car yesturday and now I have a vibration at 70MPH. I'm not trying to ask or say stupid stuff I'm just thinking that my pinion seal is causeing it but some of my buddy's say it's something else I just wanna make sure when I go to fix the problem I fix everything. Also I just rotated my tires last week could it be possible that I need an alignment cause when I come to a stop when I'm on the brake's my steering wheel begins to shake.

[SHUTUDWN]

I don't have a clue about the pinion seal, but if you just had your tires rotated maybe they weren't balanced properly or they are worn unevenly. If you are unsure about the alignment check the position of your steering wheel when you're driving. It should be centred.

[hotwheels]

Sounds like you have several different things going on........First, if you get into the habit as most of us, you will tend to be fairly aggressive driving your stang. This will tend to wear out the pinion seal and cause a slight leakage. Just from the constant up and down action of the axle housing........So i would think if you change that seal, that will cover the leaking.

2nd, vibration could be caused by several things like a bad u-joint, out of balanced tires, or a bad engine dampner. So, did the vibration start before the tire rotation? when the did the rotation, were the tires rebalanced? I would think at 70mph, it's a tire issue myself and this is where i would focus most of my attention.........on the u-joint just jack up the car, and grab the driveline right at the joint and move it up and down, watching the joint. If the joint moves fairly loosely, you will need to replace the joint. ( i wouldn't think your joint is bad yet, but you never know.)

3rd, Shaking when applying the brakes is almost always a warped rotor. Depending on the miles on the car, just pull off the front rotors and take them to a shop that can turn them for you and make them smooth again. Depending on your money.....Usually about 10 bucks a rotor. If money is a little free, just order some new ones. Try to stay away from the ones with holes drilled in them though, they tend to get cracks in them....The rotor type that have the grooves in them are a good rotor if you want a set that atleast look kewl.

Lastly, your engine dampner which is a little harder to diagnose. But these are a common failure on mostly 5.0L cars and tend to cause a vibration through the entire car at all mph......Usually not noticeable at idle. (Don't go after this first do to cost of a new dampner)......

[Intmdtr]

check that your tires have no buldges in them, maybe a belt let go in the tire as well? just another thing to check.

[Beast Mode]

Thanks guy's I will check that stuff tomarrow. How often doe's a pinion seal go bad just wondering? I think my tire's are fine but I will have them checked and I will check my rotor's while I'm at it thanks alot guy's and I will tell ya what I findout when I check it.