C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Vacuum and climate control

Thread Tools
 
Search this Thread
 
Old Sep 2, 2024 | 01:45 AM
  #1  
DorianC3's Avatar
DorianC3
Thread Starter
Melting Slicks
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Nov 2017
Posts: 2,358
Likes: 519
Default Vacuum and climate control

Greetz All,

There is a T in the vacuum line leading to the cabin’s climate control. How important is this to the operation of it ? Seems like a lot of lines, switches and relays back there that could be a source of vacuum leaks.

MTIADC3
Reply
Old Sep 2, 2024 | 04:08 AM
  #2  
hunt4cleanair's Avatar
hunt4cleanair
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2002
Posts: 5,236
Likes: 898
From: Myrtle Beach SC
Default

Originally Posted by DorianC3
Greetz All,

There is a T in the vacuum line leading to the cabin’s climate control. How important is this to the operation of it ? Seems like a lot of lines, switches and relays back there that could be a source of vacuum leaks.MTIADC3
Critical! Vacuum operates actuator doors that open and allow cool/heated air into the cabin. I believe there is three or four depending on whether the vehicle has A/C. It also operates the switches on the console.

Hope this helps!
Reply
Old Sep 2, 2024 | 06:23 AM
  #3  
4-vettes's Avatar
4-vettes
Race Director
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Nov 2006
Posts: 13,225
Likes: 7,823
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
Default

Ahh, ain't gonna work without it! NOT ONE BIT! There are NO extra unnecessary lines. There is NOTHING you can eliminate and still have a functional system.
If you wish to have functional vents, air conditioning, heating, and defrost you need this vacuum source.
THE END
Reply
Old Sep 2, 2024 | 07:45 AM
  #4  
Bikespace's Avatar
Bikespace
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 11,947
Likes: 4,506
From: Virginia
Default

If you just want your car to run well, you can eliminate about 90% of the vacuum lines and systems. Is that your question?

Some of the flappers in the HVAC system are vacuum controlled, so you'll lose that functionality.
Reply
Old Sep 3, 2024 | 12:52 PM
  #5  
wwiiavfan's Avatar
wwiiavfan
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Oct 2020
Posts: 1,567
Likes: 576
From: Wisconsin
Default

If you suspect a vacuum leak in the cabin, time to venture into the black hole that is instrument cluster R & R. I recommend starting with the alcoholic beverage of your choice.
Reply
Old Sep 3, 2024 | 01:10 PM
  #6  
barkingrats's Avatar
barkingrats
1967 Pedal Car Champion
Supporting Gold
 
Joined: Mar 2020
Posts: 9,135
Likes: 4,244
From: US-PNW
Default

Originally Posted by wwiiavfan
If you suspect a vacuum leak in the cabin, time to venture into the black hole that is instrument cluster R & R. I recommend starting with the alcoholic beverage of your choice.
Along with a box of band-aids and your chiropractor on speed-dial.
Reply
Old Sep 3, 2024 | 01:13 PM
  #7  
Bikespace's Avatar
Bikespace
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 11,947
Likes: 4,506
From: Virginia
Default

Originally Posted by 67:72
Along with a box of band-aids and your chiropractor on speed-dial.
Or a $5- bag of vacuum caps, and 30 seconds in the engine compartment.

At the very least, confirm the source of the leak, before digging around under the dash.
Reply

Get notified of new replies

To Vacuum and climate control





All times are GMT -4. The time now is 03:08 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
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-7
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-8
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-9
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