I was hoping someone could help me try to pinpoint/fix a vibration that just started occuring in my 05 TL Automatic with 24,000 miles. I have taken it into Acura for numerous rattle fixes and recently took it to them to balance and rotate the tires. Since the balance and rotation appointment, there is a vibration noise coming from somewhere in the right passenger area. I took it back to the dealer and rode with the tech 2 times and of course it didn't occur! I even took it on some of the bumpier roads. It is loudest when I am going around 70mph and I don't have to actively be pressing the accelerator at that speed for the noise to occur. Also, when I go over a bump at that speed the noise increases. I thought that it was in the dash area, but could it be in the passenger seat area since it didn't occur when the tech was with me?

Any help is greatly appreciated!!
Thank you!

 

If you do a search I think there maybe a solution to your rattle. I have one too and I'm still trying pinpoint it using various threads here. I hope this will help.