I cleaned my throttle body about 3 weeks ago and I noticed my idle speed is much higher at start up around 1200 rpm then it gradually drops to 700 rpm . Performance improved and my gas mileage was better then a week later my cel came on with a p0430 code .I went to autozone and they cleared out the code and on saturday it popped up again WTF I never had this problem before I cleaned the throttle body in my 00 gs 300