2000 Dodge Dakota Upper Vents Blow Heat

DODGE DAKOTA
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HOUSEJR
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  • 1 POST
I own a 2000 Dodge Dakota Quadcab (94000 miles). I have a ventilation door problem. Any selection on the air circulaion control that should utilize the upper vent outlets causes the air to blow from the heater outlet. Sometimes, on the low blower setting, air will come out of the upper vent outlets until a higher blower setting is used, then it reverts back to the problem described above. Any ideas? Thanks.
May 17, 2006 at 3:32 AM
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LOSONE
  • ✓Experienced Mechanic
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You have a vacuum leak before it get to the controller. Go under the hood and find a black round vacuum canister with two lines connecting. Trace the one to the engine and see if it is broken. They are plastic and often burn and crack causing a loss of vacuum.
May 17, 2006 at 4:46 AM
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Suggested Repair

Check for a vacuum leak before the HVAC controller. Under the hood, locate the black round vacuum canister and its two lines. Trace the line to the engine and replace it if the plastic is burned, cracked, or broken.

Conversation Summary

A 2000 Dodge Dakota Quad Cab owner reports that selections meant to use the upper vents send air from the heater outlet instead. On low blower, air may briefly come from the upper vents until a higher speed is selected. The expert says a vacuum leak before the controller is likely and advises inspecting the vacuum canister lines to the engine for cracks or breaks.

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