Air does not flow through the mid vents on dash?

Tiny
RICHIE BRINKMAN
  • MEMBER
  • 2004 FORD RANGER
  • 3.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 142,000 MILES
I replaced blower motor and fan, resister, and actuator motor. What could be the problem?
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Thursday, August 25th, 2022 AT 12:42 PM

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Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 107,591 POSTS
Hi,

The airflow direction on this vehicle is controlled by a mode door. On many vehicles, there is an electric motor that opens and closes the door to change airflow direction. On this truck, it is controlled by an engine vacuum.

So, does it respond quickly when you change from floor to defrost? If it does, the mode door vacuum motor could be bad, there could be a vacuum leak, or the vacuum hose may have broken or come disconnected.

I attached a pic below. Number 1 in the pic is the mode door motor in question. Check to see if it is connected and getting a vacuum when you select the panel.

Let me know what you find.

Take care,

Joe

See pic below.
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Thursday, August 25th, 2022 AT 7:14 PM

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