Notices
C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech

HELP!! HVAC Vacuum Lines!

Thread Tools
 
Search this Thread
 
Old Sep 11, 2011 | 06:24 PM
  #1  
Bob Lobblah's Avatar
Bob Lobblah
Thread Starter
Instructor
15 Year Member
 
Joined: Jan 2007
Posts: 100
Likes: 0
From: Grand Junction Colorado
Default HELP!! HVAC Vacuum Lines!

So....after hours of searching and finding a remedy on this wonderful forum, I finally had some time to tear my car apart looking to see if my vacuum lines were damaged that control the HVAC doors. Well, not to my surprise, as soon as removed the battery I could see the line that goes through the firewall was broken. After working from the inside to free the hose I decided to leave it running through the firewall so I can snake the new through with the old. So, I returned to inspect all of the rest of the assembly in behind the PCM. As I am gently inspecting these lines-another one simply breaks off. This is one tied up inside another one of the taped wire clusters.

I have searched for at least an hour to buy a complete kit and cannot find one.

I was hoping to find something other than the stealership to purchase the comlete kit. As I have now taken the fender off and I now plan on replacing the entire system. This is not a fun job and I don't particularily feel like doing it twice.

If anyone knows a vendor that sells the complete package, elbows, lines, 90's etc please let me know.

If not i guess I am off to the stealership to order it.........
Reply
Old Sep 11, 2011 | 06:30 PM
  #2  
tracer1's Avatar
tracer1
Burning Brakes
10 Year Member
 
Joined: Aug 2010
Posts: 930
Likes: 13
From: Aiken SC
Default

You can get the line @ Advance/Auto Zone, etc. Sure you can get the elbows and such. Don't know about a complete kit though. I think you can get a repair sleeve for the broken line if you have enough visible to work with. Hope that helps.

tracer1
Reply
Old Sep 11, 2011 | 06:50 PM
  #3  
Mr.Bill's Avatar
Mr.Bill
Race Director
 
Joined: Jul 2007
Posts: 18,681
Likes: 47
From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
Default

Originally Posted by tracer1
You can get the line @ Advance/Auto Zone, etc. Sure you can get the elbows and such. Don't know about a complete kit though. I think you can get a repair sleeve for the broken line if you have enough visible to work with. Hope that helps.

tracer1
I agree, You should be able to get vac hose and such parts at a good pars store.
In most cases this is caused from a battery that has leaked in the past, Any signs of corrosion from battery acid?
Mr.Bill
Reply
Old Sep 11, 2011 | 11:09 PM
  #4  
madmatt9471's Avatar
madmatt9471
Team Owner
Supporting Lifetime Gold
15 Year Member
Liked
Loved
Community Favorite
 
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-----
Default

Originally Posted by Bob Lobblah
So....after hours of searching and finding a remedy on this wonderful forum, I finally had some time to tear my car apart looking to see if my vacuum lines were damaged that control the HVAC doors. Well, not to my surprise, as soon as removed the battery I could see the line that goes through the firewall was broken. After working from the inside to free the hose I decided to leave it running through the firewall so I can snake the new through with the old. So, I returned to inspect all of the rest of the assembly in behind the PCM. As I am gently inspecting these lines-another one simply breaks off. This is one tied up inside another one of the taped wire clusters.

I have searched for at least an hour to buy a complete kit and cannot find one.

I was hoping to find something other than the stealership to purchase the comlete kit. As I have now taken the fender off and I now plan on replacing the entire system. This is not a fun job and I don't particularily feel like doing it twice.

If anyone knows a vendor that sells the complete package, elbows, lines, 90's etc please let me know.

If not i guess I am off to the stealership to order it.........
Here is a good write-up - you can get any vacuum fittings at a local auto store!

Thanks,matt
Reply
Old Sep 12, 2011 | 12:55 AM
  #5  
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: 367,940
Likes: 24,702
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

Originally Posted by tracer1
You can get the line @ Advance/Auto Zone, etc. Sure you can get the elbows and such. Don't know about a complete kit though. I think you can get a repair sleeve for the broken line if you have enough visible to work with. Hope that helps.
If you HVAC controls are working OK, then just replace the lines.
Reply
Old Sep 12, 2011 | 04:28 PM
  #6  
Bob Lobblah's Avatar
Bob Lobblah
Thread Starter
Instructor
15 Year Member
 
Joined: Jan 2007
Posts: 100
Likes: 0
From: Grand Junction Colorado
Default

Originally Posted by Mr.Bill
I agree, You should be able to get vac hose and such parts at a good pars store.
In most cases this is caused from a battery that has leaked in the past, Any signs of corrosion from battery acid?
Mr.Bill
Yeah, there was some corrosion. Not a lot but neverless there was some. What is the best way to clean it without using water?

I found the broken line right away but as I worked I found more and more. That's what prompted me to replace everything.
Reply
Old Sep 12, 2011 | 04:45 PM
  #7  
dgrant3830's Avatar
dgrant3830
Tech Contributor
10 Year Member
 
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Default

I think you are a wise man to replace anything and everything that comes into question. This preventative maintenance insures future issues will be less.
Reply
Old Sep 12, 2011 | 05:03 PM
  #8  
Chicago1's Avatar
Chicago1
Race Director
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2008
Posts: 12,413
Likes: 502
From: Rio Rancho NM
Default

Originally Posted by Bob Lobblah
Yeah, there was some corrosion. Not a lot but neverless there was some. What is the best way to clean it without using water?

I found the broken line right away but as I worked I found more and more. That's what prompted me to replace everything.
Good old baking soda and water.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-1

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-2

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-3

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-4

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-5

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-6

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-7

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-8

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-9

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
Old Sep 12, 2011 | 08:29 PM
  #9  
Mr.Bill's Avatar
Mr.Bill
Race Director
 
Joined: Jul 2007
Posts: 18,681
Likes: 47
From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
Default

Originally Posted by Chicago1
Good old baking soda and water.
I agree.
Reply
Old Sep 12, 2011 | 09:49 PM
  #10  
cdkcorvette7's Avatar
cdkcorvette7
Tech Contributor
 
Joined: Aug 2008
Posts: 2,902
Likes: 21
From: Oak Hill Virginia
Default

In case you haven't already found this thread: http://forums.corvetteforum.com/c5-g...with-pics.html
Reply

Get notified of new replies

To HELP!! HVAC Vacuum Lines!





All times are GMT -4. The time now is 04:59 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE