Been driving the car lately and have noticed an increased vibration throughout the cabin. With or without the A/C on. More predominant with the A/C on of course. I'm thinking more than likely motor mounts of some sort. But could it be something different? No change in idle, no change in anything. Maybe I haven't noticed it as much since I haven't been using the A/C due to the nice weather. Any insight would be appreciated. Thanks!

99rx.

 

I had a vibration at around 50 to 65 miles per hour, fought it for a year and it turned out to be the bearing yolks on the drive shaft to the readr of the car. (only applies to AWD) Front wheel drive does not have this shaft....

 

Yeah this only happens at idle. And mine is FWD.
I am just going on a trip Sunday to upper state FL to get my door locks fixed with a member and was curious if anyone knew what it was before I left. I am going to put some seafoam in the tank and see if that helps.

 

Probably engine mounts, but it could be a slightly dirty throttle body.

My RX is still extremely smooth at 175,000 miles.