View Single Post
  #2 (permalink)  
Old 01-09-09, 10:21 PM
Sammy Z's Avatar
Sammy Z Sammy Z is offline
Cadillac Owners Connoisseur
Cadillac(s): CTS 03
View Sammy Z's Photo Album
 
Join Date: Jan 2008
Location: Chicago, IL
Casino Cash: $9600
iTrader: (0)
Re: O2 Sensor bank 2 cts Tail light stay on

Wecome to the forum. It was common to feel the shake in the 03 engine. I have the same problem and have sat in a few more and they all seem to do it. You should replace the bad O2 sensor, but I don't think it will fix the shaking. I think there is a mod for it where it raises the idle RPMs to 800 but I'd rather have the lower rpm and live with the shaking. I don't know if the new O2 will change the fuel economy, but you won't be able to pass an emision test with that problem. Good luck