Mine did same as you but under warranty. If you decide to go aftermarket, go with a Zabteck for $210-300...

http://www.zabteck.com/07tb.htm

I ran both stock and the Zabteck. The Z was great and 10 minute bolt on job...

If you cant afford that ask around on the forums and somebody may just give you or sell real cheap their old stock one they have holding down shelf space....

 

I wouldn't risk driving it. I would drive mine, then randomly the car would go into fail safe. Not exactly a good thing when your going 70 down the highway, and the car suddenly drops down to 40...I would use someone elses car for now.

 

I had the same exact problem for a long time finally replaced the tps sensor and it runs great hasnt had a problem yet i will post or start a new thread if it starts again but it seems to run better so i say get it or wait a week or two and i will let you know if anything happens