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ccv honk noise

  1. P1188 & P1189 Codes/CEL - At my whits end here!

    General E46 Forum
    Hey Fanatics, I'm trying to debunk these fault codes here. I have been trying to pass smog and even though the car is running fantastic (23mpg city / 33mpg highway / avg combined 27ish) I keep throwing these codes. I by no means post a thread without searching but I'm really at a loss here...
  2. Noise: Idle Control Valve?

    DIY: Do It Yourself
    I've got a noise that is coming from the area of the Adjuster Valve or Idle Control Valve. It is a kind of honking sound that happens about 1-2 times per second when idling. I can't hear it at higher revs, and it goes away after the car warms up. I figure it's the Idle Control Valve, will I...