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cold noise

  1. 2008 Mustang GT Howls When Cold

    2005-2010 Mustang GT Tech
    Over the summer, I installed a K&N Lifetime filter into my GT's factory airbox. I have had no problems with it until the temperature began to drop this month. When ever starting my car on a day that is 55 degrees or less, there is a very loud howl coming from under the hood. This eventually...
  2. 2009 Mustang GT Engine has clicking sound when cold.

    2005-2010 Mustang GT Tech
    I'm not sure if its been there since new, and I'm just now noticing it more (I bought it this past summer), but my 2009 GT has a faint clicking sound that follows the rpm's coming from the motor when its cold. The sound fades as the car warms up. I don't think its the usual noisy 3 valve sound...
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