Just wondering if this is normal or not. ANd if not possible fixes. For some reason, the drivers side center vent has a substantial amount less air flow than the passenger side. If I close passenger side the drivers side does increase. I was wondering if this differential is normal or not.
Mine is the same way. I'm not sure why they do that.
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I had the same issue.
I found the little piece of foam that helps seals things on the hvac unit had come off and was blocking it. I repositioned it, glued it on and all is fixed.
I ended up fixing it when I took the dash apart. The foam piece that is at the base of the vent tubes came off and blocked the vents slightly. You can see if same happened to you.