On my way to work I started getting a rumble strip vibration feeling from the rear end. I car pool , so we took the other ride in.

When I got back to my 08 GX470 , I could not repeat the vibration on a 15 mile run. Tires are fresh and balanced.

What could cause a strong vibration and just stop the next time driven? Thinking some thing in powertrain is about to fail. Any thoughts?

 

Did this happen as you were traveling straight and at a constant speed? Because if it happened as you came to a stop, or if you were accelerating, you have the driveshaft clunk.

Chip H.

 

I have lubed the driveshaft before. So this is different. It came on suddenly around 40 mph worse at 50 , less at 30. Not engine related , seeing as no codes kicked. Noise and vibration seamed to come behind me. I took it to a garage I have a almost a 20 year friendship with. Our kids grew up together.. Their gonna give it a good once over. I am worried something needed lubrication and got hot without seizing up. Crossed fingers their. U joints just dont get better. I will just have to see if they find anything. It was cold that morning.

I will post if they find anything . I have no drips under it ,

What problems would a soft airbag lead to?

 

Brake caliper sticking? A bag wouldn’t cause rumble strip feeling. has the driveshaft been lubricated at all the points? It’s easy to miss one I know I have

 

A bad air spring would have it riding on the bump stops, and that would be a rough ride.
If you haven't replaced the air springs yet, you're probably due.

If you have a warm garage, park it in there, spritz some soapy water on them, then cycle through the high-normal-low positions to see if there are any deep cracks in the rubber, looking for bubbles.

Chip H.

 

It’s a reach, but on a super cold morning, you may have had a piece of ice, on a critical surface that threw something out of balance. Ice melts, problem disappears.

 

That's what I'm hoping . Something frozen and let loose

I might as well have the Transfer case serviced while it's there.

No tow hitch on it, 150,000 now. I see people saying to use the 75/90 syn gear oil for the differentials and Transfer case. Opinions?

 

Hot to delete double posts should be easier to find...opps

 

wrong forum.

 

The problem never repeated itself over the last month. Had my garage friends look it over for a good once over anyway. All is well and fluids are still good in the driveline.

Now if I could just keep that new gas cap tight enough to seal and not kick codes every other fill up!

 

Oops wrong thread. Please delete.