AC not blowing though vents
Thread Starter
Racer
Joined: Nov 2007
Posts: 266
Likes: 1
From: Orange County CA
AC not blowing though vents
I used my defroster one night last week, the next night I turned it on back to the vents. Never blows though the vents since. I have the duel zone controls.
What could be the problem?
What could be the problem?
Burning Brakes
Joined: May 2006
Posts: 816
Likes: 0
From: Georgetown Indiana
Does it blow out your defroster or any one vent??
If so it could be that the vacuum on the ac doors are not working which in a lot of cases results in the plastic tubing under your battery is broken from battery acid.
If so it could be that the vacuum on the ac doors are not working which in a lot of cases results in the plastic tubing under your battery is broken from battery acid.
Thread Starter
Racer
Joined: Nov 2007
Posts: 266
Likes: 1
From: Orange County CA
Blows from defroster on any selection. I notice it blows though the vents when only defroster is on. I have a extended warranty, so it might be the best bet to let them take care of it. Doesn't blow strong from the vents
Late Model Domestics
Joined: Oct 2007
Posts: 1,548
Likes: 46
From: Virginia Beach VA
Vacuum problem!
If its under warranty let them deal with it as it could be corroded vacuum lines or as simple as the 90 degree vacuum line unhooked from the back of the manifold!
Plenty of info on this if you search.
Mario
If its under warranty let them deal with it as it could be corroded vacuum lines or as simple as the 90 degree vacuum line unhooked from the back of the manifold!
Plenty of info on this if you search.
Mario
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
Correct, the vacuum hose from the back of the intake, runs behind/under the battery is most likely the culprit. The HVAC system in most GM's default to defrost when INSANE (so you can at least see where your going. Usually a cracked/broken vacuum hose.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
If not then you can follow the Write-Up I did on the Vacuum line fix:
http://forums.corvetteforum.com/c5-g...with-pics.html
Thanks,Matt
Race Director
Joined: Mar 2008
Posts: 12,413
Likes: 502
From: Rio Rancho NM
First go and pull any codes from the DIC, reset the codes for the HVAC this should reset the actuators. You'll hear them after you clear the codes out.
If not then you can follow the Write-Up I did on the Vacuum line fix:
http://forums.corvetteforum.com/c5-g...with-pics.html
Thanks,Matt
If not then you can follow the Write-Up I did on the Vacuum line fix:
http://forums.corvetteforum.com/c5-g...with-pics.html
Thanks,Matt
Great write up!!
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