Low A/C air flow pressure

1999 CHEVROLET TAHOE
75,000 MILES • V8 • 4WD • AUTOMATIC
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KJS111
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  • 2 POSTS
The A/C blows cold air but the air flow pressure is very low. Please help.
Nov 29, 2009 at 1:39 PM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
It sounds like you have a mode blend door that is not working which is common. Here are to guides to help you get the problem fixed:

https://www.2carpros.com/articles/replace-blend-door-motor

and

https://www.2carpros.com/articles/low-or-no-air-flow-from-vents

Please run down these guides and report back.

Cheers
Nov 29, 2009 at 6:35 PM
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KJS111
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  • 2 POSTS
Yep, you were right I checked out the mode door actuator and it was not moving so I got a new one for $67.00 on Amazon and it works great! Thanks for the guides they really helped. I love this site.
Nov 29, 2009 at 7:32 PM
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GARFIELDNEWS
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The air flow on the air conditioner is very low. Someone had suggested a clogged cabin filter but I saw on your site that this vehicle does not have one. Other than checking the duct work for leaks and misalignment, do you have any suggestions as to how to get the cold air to blow out? The fan seems to work, just very little directs up top.
Sep 4, 2018 at 5:00 PM (Merged)
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JACOBANDNICKOLAS
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Is the air blowing out of the wrong area? For example, you have it set on the vents, but it blows out the defroster hard and only a little from the vents.
Sep 4, 2018 at 5:00 PM (Merged)
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GARFIELDNEWS
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There is some leakage under the dash which I have to address. The flow does change when the controls are switched so it does direct properly but the flow is weak at best.
Sep 4, 2018 at 5:00 PM (Merged)
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JACOBANDNICKOLAS
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  • 110,175 POSTS
Check to see what is leaking and let me know.
Sep 4, 2018 at 5:00 PM (Merged)