Heat knob issue no heat?

BHAMDOC1973

MEMBER
2006 NISSAN XTERRA
6 CYL
4WD
AUTOMATIC
190,000 MILES

I have heat but no matter which speed it's the same blowing power, very low.

Friday, January 3rd, 2025 AT 12:17 PM

7 Replies

KEN L

MASTER CERTIFIED MECHANIC
50,321 POSTS

I would check the coolant level first, and if the coolant is okay, start the engine and allow it to get warm, then grasp the heater hoses to see if they are hot which they should be. Please go over this video:

https://www.youtube.com/watch?v=SNRb6pSwYuU&t=1s

If you check everything and still no heat, I would swap out the air mix door (temperature) blend door actuator. Here is the location so you can check it out. Check out the images (below). Let us know how it goes.

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Friday, January 3rd, 2025 AT 6:16 PM

BHAMDOC1973

MEMBER
1,752 POSTS

I have heat I am talking about the blowing power, feels like it's on speed 1 of the bower no matter what speed I choose.

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Saturday, January 4th, 2025 AT 11:06 AM

KEN L

MASTER CERTIFIED MECHANIC
50,321 POSTS

Gotcha, it sounds like the cabin air filter is clogged. Here is the location so you can check it out. Check out the images (below). Please let us know what happens.

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