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A/C only blows air out the floor and defrost vents

Tiny
SURESS NOLAND
  • MEMBER
  • 1993 CHEVROLET LUMINA
  • 98,000 MILES
My air does not blow out through my dashboard but out of the bottom of my car on my feet and through my defrost vents. The air blows cold just not through my vents.
Monday, April 23rd, 2018 AT 7:26 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
This sounds like one of two problems. either you lost the vacuum supply from the engine to the HVAC system or the vacuum rotation valve has fallen apart.

Here is a guide and a diagram to show you what to look for:

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

Check out the diagrams (below).

Please let us know what happens.

Cheers, Ken
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Wednesday, April 25th, 2018 AT 10:19 AM

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