04-z a/c help
Thread Starter
Safety Car
Joined: Dec 2009
Posts: 4,363
Likes: 429
From: Birmingham Al
04-z a/c help
The A/C blows cold but when you go from the outside air to inside air it stays the same nothing changes don't know were to start looking ..Thanks for any help..
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
That damper is VACUUM ACTUATED. If it isn't working, you may have other damper issues that you are not seeing. When you change the air vent path from LOWER to UPPER to DEFROST, does the air change its flow path or does it just blow out a random number of different levels??
Bill
Bill
Thread Starter
Safety Car
Joined: Dec 2009
Posts: 4,363
Likes: 429
From: Birmingham Al
I tried it .well it blows out of all the vents ,it will blow out the foot deal and will stop if you change it to stop blowing out at your foot deal other than that air come out all the vents.. It just blows ..This past winter in rebuilt the motor and had a Batt. problem so its been in and out and a PCM prop. so have been all over the thing but I try to make sue all is back were it should be but would be easy to have Brocken a vac line or left one off or it popped off . Don't know were to start looking for the right A/C lines that control the A/C . doors.. Thanks.. I thank it just a vac Problem ???
Thread Starter
Safety Car
Joined: Dec 2009
Posts: 4,363
Likes: 429
From: Birmingham Al
One more thing when you change from to foot back to upper it just not blowing out the floor it still blows out everywhere also so it does not stop blowing at the top so when you change it back to top it stops blowing at the foot ..
Drifting
Joined: Feb 2008
Posts: 1,596
Likes: 67
From: Bahama North Carolina
I tried it .well it blows out of all the vents ,it will blow out the foot deal and will stop if you change it to stop blowing out at your foot deal other than that air come out all the vents.. It just blows ..This past winter in rebuilt the motor and had a Batt. problem so its been in and out and a PCM prop. so have been all over the thing but I try to make sue all is back were it should be but would be easy to have Brocken a vac line or left one off or it popped off . Don't know were to start looking for the right A/C lines that control the A/C . doors.. Thanks.. I thank it just a vac Problem ???
https://www.corvetteforum.com/forums...with-pics.html
Thread Starter
Safety Car
Joined: Dec 2009
Posts: 4,363
Likes: 429
From: Birmingham Al
This link will answer a lot of your questions.
https://www.corvetteforum.com/forums...with-pics.html
https://www.corvetteforum.com/forums...with-pics.html
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Thread Starter
Safety Car
Joined: Dec 2009
Posts: 4,363
Likes: 429
From: Birmingham Al
Am thinking if one of the VAC lines leaking or off then the motor has a VAC leek as well if the A/C ducks are pulling direct VAC off the manifold them I have VAC in the motor not just the A/C unless there is a check ball or something in the system incase this happens will not affect the running of the motor may not be that way , it runs good.. Just thinking out loud..
Thread Starter
Safety Car
Joined: Dec 2009
Posts: 4,363
Likes: 429
From: Birmingham Al
I read the deal and I see there is a check ball in the system cool . Prop. pull the intake were I can see what the heck is going on back there .I just seen this heat shield that goes under the intake 18-20 HP on the rollers dropped the temp on the intake 50% for $55.00 bucks why not be a good time to install.. Thanks for your help..
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
PLAIN & SIMPLE!!!!!!!!!!
The VACUUM from "HERE"
Is NOT GETTING TO HERE:
I lengthened TENY TINY Vacuum Line behind the manifold so I wouldn't have that issue any longer:
From the vacuum reservoir,,,,,,,,, It goes to the vacuum controller where you (AT THIS TIME) have NO VACUUM!!! The solenoid cans are no longer being told (BY VACUUM) to open or close the damper/s and THUS,,,, AIR OUT OF ALL THE VENTS!!!!
NO! It wont effect the engine idle enough to notice without test equipment/ data logging
The VACUUM from "HERE"
Is NOT GETTING TO HERE:
I lengthened TENY TINY Vacuum Line behind the manifold so I wouldn't have that issue any longer:
From the vacuum reservoir,,,,,,,,, It goes to the vacuum controller where you (AT THIS TIME) have NO VACUUM!!! The solenoid cans are no longer being told (BY VACUUM) to open or close the damper/s and THUS,,,, AIR OUT OF ALL THE VENTS!!!!
NO! It wont effect the engine idle enough to notice without test equipment/ data logging
Last edited by Bill Curlee; Jun 21, 2016 at 07:51 PM.
That is sticky material too.
Thread Starter
Safety Car
Joined: Dec 2009
Posts: 4,363
Likes: 429
From: Birmingham Al
Thanks ,for all the work I have done to this 04 this looks easy just track down the leek ,I have a vac tester . I might get lucky and something just popped off be the first time .. I got it from here .Thanks again for the info ...