Viberation. When my 2009 camry sits in idle with the car in "D" (drive), the whole car viberates. When I shift it up to Neutral, it no longer viberates then when I shift it back to "D", it viberates all over again. The viberation happens only when its in "R" (reverse) and "D" (drive). When I have the car in "P" (park) and "N" (neutral) it does not viberate at all. I would like to know what we can to do solve this issue. The viberation has been annoying.

This most common cause of this is the engine mounts are defective.

Rack needs replacement or fluid, ussually fluid, part of normal servcie.... check owners manual and use only what it says.. should clear up fast, pump is overloaded .. if not tow in a get Rack n Pinion replacement!

check hub bearing

You may have bad baffles in the Exhaust muffler or the Catalytic Converters. Also some Manufacturers put Tuning weights on Exhaust pipes. Since the problem seems to be isolated to engine RPM, you have eliminated many of the other possibilities in the Drivetrain by your description.

If this would happen to be a Ford V-8 with Cam Phasers, they can get out of sync and cause the engine to vibrate. Check your Vibration Damper bolt as a loose pulley can vibrate.

if tie rods are ok! then check for a bad motor mount. also make sure cv axles are ok and not loose.

have you checked your calipers? They may be sticking putting lots of strain onto the drive shaft causing it to vibrate.

With all the recent snow and grit on the roads you may have some caught in the mechanism meaning it cant release.

Just a small thought to start to determine the problem.

Common problem. Check your motor mounts and transmission mounts, more than likely it's the motor mounts. While they may "look" OK from the outside, the mounts tend to crush and not be as high as they need to be. This problem has is just a nuisance and won't hurt the performance of your TB. Typically this problem will start out only happening when it's a cold engine, then go away once the engine has warmed up. But will get worse as time goes on. Buy OEM mounts as aftermarket mounts won't be as stiff and a lot of times end up with vibration quickly after they are replaced, so don't waste our money. Hope this helps! Good luck.

sounds like a CV joint that may be failing. When the trans in neutral is disengages the joint and that stops the vibration. Have it checked out at a local shop.

Check the U-joints and center carrier bearing on the drive line.

Your motor mounts are worn out. Replace the "dog-bone" looking mount at the passenger side of the engine, and then replace the hydraulic mount right between the engine and the radiator.