Well, by clearing the codes, you erased the memory settings. The motor has to do a re learn for the idle.
Also, when you cleared the codes you erased needed freeze frame data for a tech to see which could lead him in the right direction for the repair.
Your 420 code is most likely a failed cat converter. The others are related to the cam sensor but a code never identifies a bad part just a failed system.
Drive the car steady at 45-55 for 5 minutes to help the idle re learn. Beyond that, how did it run?
Wednesday, September 28th, 2011 AT 6:45 PM