Usually I will idle at 700 rpms, sometimes it will drop down to 500 or 400 rpms. I am thinking it could be the fuel pump going out. I am going to change spark plugs or look at their condition this weekend. I have had the lean gas code before and I have been getting 0302 code for egr valve for over a year. Just resetting it constantly but doesn't come on quickly until I turn on the air conditioner.

Any ideas?

 

I had the same problem. I just cleaned my throttle body really good, Go to autozone grab some TB cleaner and use a tooth brush and cloth and really clean the sh*t outta it. It helped my idle smooth out as well as my EGR light never came on again.

 

your culprit is the solenoid valve.
mine did the same thing and once i changed the valve, all is smooth.