Question about Hyundai Motor 2003 Elantra

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The direction of airflow won't change. It keeps coming out of the dash vents only, no floor,defrost,split,etc. Fuses look fine and already replaced switch box behind dial to change air direction. Where and how long does it take to locate any arms that may be inside dash to redirect the airflow?

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You are in need of a blend door motor; call your local parts store for a price and availability and if you are mechanically inclined, DIY. if not, consult your local mechanic

Posted on Oct 06, 2009

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What makes a Clicking noise coming from dash board on the passenger side?


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1 Answer

Switch on dashboard does not change air direction to flow & vents


Defrost is the default mode so if the system fais, you alays have defrost. The mode doors are controlled by vacuum motors. I would suspect a vacuum leak in the engine compartment on the hose going from the engine through the firewall and into the heater controls. Some systems have a vacuum storage canister that can also leak. The canister stores vacuum when vacuum drops going up a hill.
Or, you have a bad heater control head that is not passing vacuum to the vacuum motors on the mode doors.

Here's a diagram of the system for reference.

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