1993 Nissan Altima vents don't chang

1993 NISSAN ALTIMA
129,000 MILES • 4 CYL • FWD • AUTOMATIC
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FJAKS
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  • 1 POST
I have tried to replace the control module for the vent directions and it only blows out the front window defront ducts. How can I repare this issue?
Aug 9, 2010 at 4:02 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
I believe in this case you are looking for a vacuum leak. THe vent doors are actuated by vacuum. If there is none or it is low, the default setting is the defroster.

Check under the dash and the hood for leaks. NOTE: If you are lucky, with the engine running, you may hear a hissing sound.

Let me know what you find.

Joe
Aug 20, 2010 at 9:54 PM
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