I've got 128xxx miles on the Celica, and it's been fairly reliable minus a few suspension things, but now something else is going on and I'm not sure what it is. The last two weeks, probably every third time I turn my car on, right after start up it idles rough around 1800 rpm and the whole car shakes for about 15 seconds before it calms down. Any ideas what might be going on?

bad motor mounts, go have a look at your rear and front mounts.