Vent airflow?

NBM1961

MEMBER
2000 DODGE DAKOTA
3.9L
V6
2WD
AUTOMATIC
206,000 MILES

When heater or a/c is on air comes from defrost and floor but not out of dash.

Tuesday, June 11th, 2024 AT 10:14 AM

5 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

Yep, this happens when the small vacuum line going into the firewall from under the hood is broken or disconnected from the engine, I would raise the hood to inspect this small plastic hose. please go over this guide to see what I am talking about:

https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position

Check out the images (below). Please upload pictures or videos in your response to any problems so we can see what to help you with. Here are the vacuum lines under the dash which can sometimes be broken as well.

Images (Click to make bigger)

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Tuesday, June 11th, 2024 AT 11:20 AM

NBM1961

MEMBER
9 POSTS

Found the problem, plastic piece on top of the door that connects to the acuator was broken. With a piece of metal I opened the door to the vents and secured it. Defrost not needed in AZ.

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Sunday, June 16th, 2024 AT 3:01 PM

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

Glad you could get it fixed, thanks for letting us know. Please use 2CarPros anytime we are here to help.

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Monday, June 17th, 2024 AT 11:07 AM

NBM1961

MEMBER
9 POSTS

Hi Ken,

I have another problem. I disconnected these wires without marking them and know I don't know where they connect. It's a red, yellow and a black wire that go to the three inline connectors shown (pictures). Can you help please?

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Monday, June 17th, 2024 AT 1:39 PM

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

Sure, I can help but we only handle one problem per thread, please post your new question here, you must be logged in.

https://www.2carpros.com/questions/new

Cheers, Ken