2G Vibration at 80mph

[spyderdrifter]

I know everyone seems to have some sort of vibration in their car, and I know there's MANY vibration threads, and I've read through a lot of them etc...

So I was heading to my college class tonight and took the highway like always. I hit 80-ish mph and started hearing/feeling a weird pulsating type vibration. Right now, I can only assume it's coming from the front driver side area, and I think it's the suspension. I backed off the speed and slowed to the 65mph speed limit and it seemed to have gone away until raising the speed back to 80. Again it went away upon slowing down. It felt something like the wheel coming loose, but I know all my lug nuts are tight. Another thought was the wheel bearing, but I know how those sound when bad, and there's no vibration in my steering wheel, or the accompanied harsh noises. Just looking for ideas, I'll have to add more to this later when I learn more.

 

[Lou98GSX]

wheel balance , bent rim , bad axle .

 

[xstrat33]

I know everyone seems to have some sort of vibration in their car, and I know there's MANY vibration threads, and I've read through a lot of them etc...

So I was heading to my college class tonight and took the highway like always. I hit 80-ish mph and started hearing/feeling a weird pulsating type vibration. Right now, I can only assume it's coming from the front driver side area, and I think it's the suspension. I backed off the speed and slowed to the 65mph speed limit and it seemed to have gone away until raising the speed back to 80. Again it went away upon slowing down. It felt something like the wheel coming loose, but I know all my lug nuts are tight. Another thought was the wheel bearing, but I know how those sound when bad, and there's no vibration in my steering wheel, or the accompanied harsh noises. Just looking for ideas, I'll have to add more to this later when I learn more.

This doesn't have anything to do with the transfercase leaking oil does it?

 

[303_2G]

wheel balance , bent rim , bad axle .

Bout sums it up for the usuall suspects. I had a axle (Driver side AWD) have a bad c-clip on it and would pop out from the carrier bearing and felt like I had a bad flat tire totally randomly and pop back in by itself after a few seconds. I'm sure it's just the above listed tho.
A transfer case can throw a vibration also but if you are leaking Xfer case fluid enough to vibrate it means that fluid is gone and bout to Burn that mofo up.

 

[97 eclenger]

wheel not balanced or a bad ball joint

 

[Zorak]

Just to throw one more possibility in, if your tires are old or just cheap, they could be out of round. I've had old tires wear bad, and know ppl who have gotten brand new tires just to find that they are out of round even brand new, causing vibrations like that.

 

[91-GS]

Put her up on stands and spin the wheels. Use a pointer of some sort (a stick in a vice on the floor) as a reference point to see if your wheels/tires are round or not. This will also give you a chance to look over the tires and make sure you don't have something like a small stone stuck in the tread. That can unbalance the tire if the stone is large enough, or cause vibrations simply because there is a bump on a tire.

 

[Dfw_Dsm]

as stated above out of round tire, un balanced tire, axle shaft,

 

[bduran1220]

Or really messed up road

 

[spyderdrifter]

I really wish it was a simple as a bad road, like many are around, but I drive on that road daily without issues. So the road is out. T-case is out as well since this is my spyder and it hasn't been converted yet. Sadly, 3 of my wheels have small bends on the inner lips, but this just happened today, and it's been riding on those wheels longer than I've owned the car. I did just get a set of 2GB Talon swirly wheels to replace them though, so that'll be corrected soon. I'm leaning toward a bad ball joint or the axle. I did find the driver side axle had popped a 1/4 inch out after replacing my clutch back in January. So I'll be inspecting this closer tomorrow. No garage, so no good light source in the dark. Thanks for the suggestions.

 

[baws]

My shaking was caused by bad tie rods.

 

[so slow 420]

Mine did the same it was the ball joint

 

[Dextrocardia]

I have had the worn axel cause a wobbly experience, it feels more than an unbalanced wheel but less than a loose wheel. Take the tension off the drive train, if you can feel excessive play in the axles/CV shaft they will cause this.