dodgeman 11/5/2012

1997 Mercury Grand Marquis LS 8Cyl4.6L - Body & Interior

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There is a clicking noise under the dash from the heat or ac. What is this?

The air and heat work

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  CVO 11/13/2012

  That clicking noise is from the Temperature Blend Door Actuator.
  
  See this Fig. Fig. 1: Temperature blend door actuator installation-1990-98 vehicles with automatic temperature control
  
  http://www.autozone.com/.../...rGuideContent.jsp

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