What the hell did they actually do? I've heard after a cleaning that some people have higher idles but I cant remember anyone saying 3K RPM idles. If the only issue is the TB, I'd have to imagine it would be a lot less expensive for you to buy one from C.E.D. It's a pretty easy swap. That sucks though, gl with the fix.
EDIT: didn't read / catch that part where you already tried a new TB. That's interesting..
Chevy Cobalt LS: 2.2L- Injen Intake, ZZP long tubes, Megan cat-back, 2.4 mani, 2.4L TB, Trifecta tune, SS/TC struts/shocks, pedders, Enkei Imolas 17s, Hankook Ventus V12 EVO K110
Thinking about a forced induction system for your NA cobalt?
2.2 build logs
Last edited by Mr.N00bLaR; 02-10-2012 at 10:43 PM.