C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

AC Vents

Thread Tools
 
Search this Thread
 
Old Feb 17, 2018 | 12:59 PM
  #1  
dleibman's Avatar
dleibman
Thread Starter
Drifting
 
Joined: Feb 2018
Posts: 1,511
Likes: 385
From: Punta gorda Florida
Default AC Vents

Hello everyone, recently new to the Forum and the Vette world. Shortly after purchasing my new to me 03 50th. Anniv. vette a few months ago I noticed ac was warmer than usual. Not too cold when I purchased it. Seller had it charged for me. Had it checked and needed a new compressor, leak found and shown to me, fine with me. Had it done by mechanic who owns a new one, had many and works on many. Everything was fine and cooling great, ice cold. This is just a little history regarding the AC. Now to what may be a problem ??????. Last night while driving I noticed the center and drivers side vent not pushing a lot of air and not to cool. Was set at 71. fan on 3 bars. passenger control **** all the way to the left (coldest). Icy cold, lots of air pushing out of both passenger vents. Modes was set to VENTS/Recirc. only, not floor or both. Never noticed this before. Does not seem normal too me !!!!! ?????. Any help would be appreciated. Thanks much, fin
Reply
Old Feb 17, 2018 | 01:11 PM
  #2  
Tsumi's Avatar
Tsumi
Drifting
 
Joined: Nov 2016
Posts: 1,660
Likes: 365
From: SF Bay Area
Default

What happens when you turn the temperature all the way down? You were probably at 71 degrees already.

The passenger side temperature control is relative to driver side. The middle is same temperature as driver, while turning it cold is make colder than driver. That's why the passenger vents were blowing colder than the driver vents.
Reply
Old Feb 17, 2018 | 01:43 PM
  #3  
dleibman's Avatar
dleibman
Thread Starter
Drifting
 
Joined: Feb 2018
Posts: 1,511
Likes: 385
From: Punta gorda Florida
Default

Originally Posted by Tsumi
What happens when you turn the temperature all the way down? You were probably at 71 degrees already.

The passenger side temperature control is relative to driver side. The middle is same temperature as driver, while turning it cold is make colder than driver. That's why the passenger vents were blowing colder than the driver vents.
Thank you. but how about the difference in the air flow, strong on passenger side vents (2) and weak on middle and drivers vent on left by window.

STRANGE !!!!!! be it as it may above after reading about the same problems mentioned on this forum and others on the web just now, went to do some checking. turned on the car with same settings left last night and all vents blowing ice cold air at same output of air on all fan speeds and ac modes. "HEAL THY SELF"
NOTE: had same problem a few times with an 03 S Type Jag. told to hit top of dash a few times to release sticking doors. ?????

Thank you very much for your quick response and your help. fin
Reply
Old Feb 17, 2018 | 03:11 PM
  #4  
mikeam's Avatar
mikeam
Racer
15 Year Member
 
Joined: Aug 2004
Posts: 273
Likes: 39
From: SC
Default

Could be an issue with battery leaking and damaging AC hoses...link below...

https://www.corvetteforum.com/forums...and-a-fix.html
Reply
Old Feb 17, 2018 | 05:11 PM
  #5  
Vettemaster1985's Avatar
Vettemaster1985
Instructor
All Eyes On Me
Photogenic
 
Joined: Dec 2016
Posts: 161
Likes: 30
From: Illinois
Default

Originally Posted by dleibman
Thank you. but how about the difference in the air flow, strong on passenger side vents (2) and weak on middle and drivers vent on left by window.

STRANGE !!!!!! be it as it may above after reading about the same problems mentioned on this forum and others on the web just now, went to do some checking. turned on the car with same settings left last night and all vents blowing ice cold air at same output of air on all fan speeds and ac modes. "HEAL THY SELF"
NOTE: had same problem a few times with an 03 S Type Jag. told to hit top of dash a few times to release sticking doors. ?????

Thank you very much for your quick response and your help. fin
Disconnect your battery for 5 min... sounds weird I know, but the HVAC head unit has a mind of its own.. the warm possibly the actuator doors could be reindexed, you pull a fuse.. but not blowing so hard , I had a similar thing where I stored the car for the winter went for a cruise and put the heat on 3 bar on the fan and it wasn't blowing, put it up to high same thing 2min later of driving it started up on its own...like I said mind of its own. Give this a try, IMO of all the problems on the c5 the HVAC issues are the most annoying.
Before you disconnect the battery put the passenger side temp in the middle of warm and cold. The **** straight up, the driver **** turn it to 71degrees..

Last edited by Vettemaster1985; Feb 17, 2018 at 05:14 PM.
Reply
Old Feb 17, 2018 | 05:52 PM
  #6  
Vetteman Jack's Avatar
Vetteman Jack
Administrator
Supporting Lifetime
Veteran: Navy
St. Jude 20 Year Donor
25 Year Member
Veteran: Reserves
 
Joined: Mar 2001
Posts: 368,093
Likes: 24,732
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Default

Moving this over to C5 Tech.
Reply
Old Feb 27, 2018 | 02:43 PM
  #7  
huesmann's Avatar
huesmann
Burning Brakes
10 Year Member
Photogenic
Liked
Loved
 
Joined: Jul 2013
Posts: 1,008
Likes: 57
From: Kensington MD
Default

First thing to do is pull DIC codes and see if any of them are HVAC related. Dollars to donuts you have one of these:

B0361 Left Actuator Feedback Short to GND
B0363 Left Actuator Feedback Open
B0365 Right Actuator Feedback Short to GND
B0367 Right Actuator Feedback Open
B0441 Left Actuator Out of Range
B0446 Right Actuator Out of Range
Reply

Get notified of new replies

To AC Vents





All times are GMT -4. The time now is 11:09 PM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE