| 03 CTS Throttle Body Hello,I was having problems with a real rough idle but after searching the forum I come across cleaning the throttle body to clear up the rough idle which I did and it ran perfect but after awhile it would idle rough again so I cleaned the throttle body again which was gunked up again,ran perfect again.My question is why does the throttle body keep getting gunked up?Is there a better procedure for cleaning it,do I have to remove the TB entirely from the intake and do a more complete cleaning?I used 3M Throttle Plate cleaner with a clean toothbrush.Thanks again for this forum you all are great |