air flow is stuck blowing out vents and it won't turn

2006 NISSAN SENTRA
200,000 MILES • 1.8L • 4 CYL • 2WD • AUTOMATIC
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EMDUFRESNE
  • MEMBER
  • 1 POST
this morning i'm wondering why it's taking so long for my windshield to defrost.

in a nutshell:

air blows cold and hot no problem

air ONLY blows out of vents

knob is turned to defrost (but blowing out vents; maybe a little out of defrost)


like a dummy: i tried to force the knob back around, and heard/felt a CLICK


any suggestions?
what part(s) do i need to buy?
Aug 21, 2015 at 11:29 PM
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RIVERMIKERAT
  • ✓Experienced Mechanic
  • 6,110 POSTS
Oops. You may need to buy that switch first. Then you need to figure out why the airflow isn't being directed to the defroster vents. With the engine running, move the control between the different settings and listen for the actuators and doors moving. Check wiring and any vacuum connections to the airbox and blend door assemblies. Make sure if there are cables to the actuator(s), they move freely. Disconnect them and move the actuators by hand and see if they move easily farther than with the control.
Aug 22, 2015 at 1:28 AM
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