I noticed the other day that when i start up an it is cold it shakes a bit when i drive. not much but it is noticeable when i drive reall slow. and when i have my foot lightly on the break it an stoped it seems to shake. should i be worried?

 

Probably not. Maybe your engine waking up. If you are worried first place to check is motor mounts.

Jeff

 

Mines been doing that ever since I got it... the TB swap helped...cleaning the IAC helped alittle.. but it still does it alittle... I still have a blown plenum.. soon to be repaired.. I'm hoping fixing that will help.. I've been told a vacuum leak can cause an erratic idle

 

Yeah, mine does it, too. It's just all that power wanting out.