1996 Chevy Astro AC vents

TODDYG

MEMBER
1996 CHEVROLET ASTRO
6 CYL
AWD
AUTOMATIC
15,200 MILES

Front ac blow from the defrost vent only it was working blowing from dash board vents, is there a lever that chance this problem?

Wednesday, July 21st, 2010 AT 6:37 PM

5 Replies

JACOBANDNICKOLAS

MECHANIC
108,164 POSTS

You have a vacuum leak. The air flow direction is done by vacuum actuated vent doors. If there is a loss of vacuum, it goes to the defroster. Check under the dash. If you are lucky, with the engine running, you may hear a hissing sound.

Let me know what you find.
Joe

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Wednesday, July 21st, 2010 AT 11:26 PM

TODDYG

MEMBER
4 POSTS

Ididn't hear any hissing any other remedy to my problem

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Friday, July 23rd, 2010 AT 9:25 AM

JACOBANDNICKOLAS

MECHANIC
108,164 POSTS

Honestly, I feel strongly that there is a leak. I was hoping you would hear a hissing to help locate the problem. If you don't, you have to start following the vacuum hoses to see if any are damaged or disconnected.

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Saturday, July 24th, 2010 AT 12:40 AM

TODDYG

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4 POSTS

You guys are the best! I found the broken hose, replaced it and the air works fine! In the process of replacing all hoses they become brittle in this Arizona heat thanks!

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Saturday, July 24th, 2010 AT 9:10 AM

JACOBANDNICKOLAS

MECHANIC
108,164 POSTS

Arizona. I thought it was hot here in PA. Nearing 100 degrees with like 80% humidity. It's hard to breath outside. But that probably sounds like winter to you. I have always wanted to visit AZ. Maybe some day when my kids are grown I'll have a chance.

Good job finding the leak. They are a pain, but I knew that is what it was. Take care of yourself, tell your friends and family about the web site, and thanks for using 2carpros. Com.

Joe