Has anyone experienced this? When the car is at a light I can feel the engine
vibrating through the floor slightly and the door panel. While driving it's smooth a ice. Should I take it in or is this just another thing I have to live with while owning my Lexo?

 

I have the same problem. Not as much as the floor but on the door panels. When i took it in for service recently, i took a test drive with a mechanic. I mentioned that vibration n the electronic fuel injection sounds which is loud. His reply was these engines are designed like that. It will always vibrate little bit and be loud. So there is nothing u can do about it don't go changing spark plugs,filter,etc etc. Its there get used to it and try not to pay attention if it helps throw in in N position at lights.

 

After you take a ride with me in my dumped AWD, you won't feel yours anymore. My car vibrates so much that I need to drop it in neutral to make all the rattling stop.

 

change your air filter and vacuum out the air box then clean your throttle body with spray and a tooth brush I just did mine a couple of weeks ago definitely helped i also added a injection cleaner in with the fuel

 

I figured I was going to have to live with it, but I will definetley do the filter deal and the injection cleaner. Thanks.

 

+1, I used BG for the throttle body, worked great

 

mine's idles very quiet *shrugs*

 

I happens ocasionaly when engine is not at normal temperature yet. Ones it reaches it, I dont feel any vibrations.

 

yeah, my AWD vibrates a lot when it's cold. watch your RPMs and you'll notice the car idling at 1000-1100 while sitting at a light, but once the temp of the engine reaches about 40% of the guage the engine will settle down to the typical 600 RPMs.

 

I noticed this with my car and made sure to only use BP gas. The cheaper gas does not like my car at all. Of course I always run premium but they've been starting to put ethanol in the premium now.

 

i fill-up mobil, i use to fill up sams club gas until i found out i could get an extra 50 miles out of the car each fillup, and the price difference was only 5-10 cents

 

Quality gas definitely makes a huge difference in the way my car runs and mpg

 

I have the same issue when the car is running in the cooler temps of the winter. I have complainede to the dealership but they say there are no codes in the computer, but it still happens from time to time. I think its annoying. I ad the same issue with my G35 and they just increased the base rpm for the idle. Lexus acted like this was a big deal. I really dont think so

 

I really think cleaning the throttle will do it

 

How low did you go? Did you use springs or coilovers? Which ones? I am trying to figure out the least painful way of lowering the AWD.