I stored my car for most of the winter. When I go to start it, it starts and idles pretty high like 3k. I let it idle and then it starts idleing up and down from 3k to 1.5k until the car gets warm enough. I'm not throwing any codes. Any help would be nice.

 

My bet is its your Cold air Idle control or whatever its called. Its under the TB. It could of gone bad in you over winter.

I recently had that problem myself and it turned out to be a bad set of Injectors.