Question about 2006 Nissan Armada

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2006 nissan armada; makes audible knocking noise from under dash

When I switch the ac/heat ducts from any other position into the face position for the vent air flow there's a very audible knocking sound. I need to trouble shoot myself as the warranty is used up 3/36 . Do you think something dropped down into the duct and is blocking the mechanisms or is it a broken part issue?

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Posted on Jan 02, 2017

  • 18 Answers

SOURCE: Cold Ait from heater ducts

u might want to check the blending doors that control ur ac and heater flow they tend to get stuck sometimes

Posted on Oct 25, 2008


SOURCE: a/c vent issue

heater blowing cold when engine idleing,works good when rpm are up. what is problem? pete

Posted on Oct 24, 2008

  • 77202 Answers

SOURCE: Air duct doors fail to operate when using the selector knob.

There is a very small black hose that provides vacuum to operate the different vacuum motors in the system through the switch you mentioned, that switch simply diverts vacuum to what ever air outlet u select, the vacuum comes from the engine, it goes through the firewall on tha passenger side, like I said it is a small black hose.

Posted on Dec 04, 2008

  • 119 Answers

SOURCE: Air conditioning - Warm air flows from ducts in AC

first be sure temp control is pushed over to cold. If the system is still there, you need to add refrigerant to system & check for leaks

Posted on Mar 15, 2010

  • 87 Answers

SOURCE: Pls guide me how to remove Ac dash vents from Nissan Altima 2005

you need to look online for a junk yard called pull apart an you can get all your parts fairly cheap I would buy the book for the car cost 20-30 dollars it will be most vaulable in this adventure

Posted on Aug 01, 2010

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