It is those Bosch O2 sensors, my originals went out and I put in the Bosch's and they lasted all of 2 weeks. I put in AC Delco's about 5 months ago and no problems since. My car was doing the same exact things as you described also. Hope this helps,

Derek

 

If it was my O2 sensors, wouldnt my car throw codes. It did when they went bad the first time.

 

Mine did not throw codes except if i drove it for more than like 20 minutes.

Derek

 

Thats what mine did when they went bad. They arent doing that now though. For some reason I just kinda doubt thats whats doing this. I dont want to spend 60 bucks and have that not fix it. I am spending so much on this freaking car already. I love it when it runs right, but I hate it when it does this crap.