Hot Air In Car
Thread Starter
Advanced
Joined: May 2008
Posts: 58
Likes: 0
From: where you can see the air Ca
Hot Air In Car
I had viewed a thread some time ago about hot air coming in the vents. The vents not closing properly or something to that affect.
I get an almost unbaerable amount of heat on a warm day. is it possible a vent is stuck open?????.
I get an almost unbaerable amount of heat on a warm day. is it possible a vent is stuck open?????.
Intermediate
Joined: Jun 2006
Posts: 31
Likes: 0
From: Minnesota
I had a similar problem with the fresh air vent in the passenger side kickpanel. The vent door and actuator were fine, but the duct's seal was cracked and deteriorated inside the body panel. Hot air was coming in from the engine bay. I resealed it with automotive window sealer (read it on another thread). Pull the kickpanel, make sure the door moves when you change the vent settings, if the door works, look inside with a flashlight. You'll see where the duct seals right to the body panel. Good Luck!
Burning Brakes
Joined: Jan 2006
Posts: 761
Likes: 0
From: san jose California
GET A MANUAL SHUT OFF VALVE FOR YOUR HEATER CORE!!!!
i did this and went from not driving the car at all when its hot, to cruisin it every chance i get.. cost is like >$20 and its one of the best mods i did for the car, you wont regret it
i did this and went from not driving the car at all when its hot, to cruisin it every chance i get.. cost is like >$20 and its one of the best mods i did for the car, you wont regret it
Pro
Joined: Jul 2004
Posts: 605
Likes: 0
From: Alta Loma CA
Check the plenum door up under the hood on the passanger side. It's where the wipers are behind a screen. There is a vacum operated door there. Mine was stuck open because the vac hose was pinched. If it does not close major amounts of hot air are sucked in. Shut off valves on the heater hose will help too.
Intermediate
Joined: Jun 2006
Posts: 31
Likes: 0
From: Minnesota
I like the shut off valve idea too! I think I'm going to do it as an extra precatuion; only drive in warm weather anyway. Could you post or pm a pic for reference?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Instructor
Joined: Mar 2008
Posts: 221
Likes: 0
From: Farifax Station VA
I just put a valve in the coolant line this morning. Home Depot...3 parts: the valve (3/4 inch) $8.90 and two hose fittings $4.20 each...the hose fittings allowed the 3/4 inch valve to fit the 5/8 coolant hose. This cut the heat entering through the floor vents by 50%. I still have heat through the vents, I am not sure how that is happening.
Burning Brakes
Joined: Jan 2006
Posts: 761
Likes: 0
From: san jose California
Racer
Joined: Apr 2008
Posts: 436
Likes: 2
Is the heater hose 5/8 or 3/4? I was thinking something like This Valve would be perfect, but obviously only if the hose is 3/4.
Team Owner
Joined: Jul 2006
Posts: 22,200
Likes: 4,187
From: Kannapolis NC
I put in the shut off valves in both heater hoses and it helped, but I still got hot air in the summer. I went to Lowe's and bought some peel and stick rubber door seal material and put it on top of the cowl in front of the wipers so that the hood seal closed against it for a tighter seal. It stops almost all the hot air from the engine compartment that comes over the cowl and feeds right into your air intakes for the interior vents.
Last edited by 65GGvert; Jun 26, 2008 at 09:06 PM.
Race Director
Joined: May 2007
Posts: 11,334
Likes: 136
From: Out of Site...Out of Mind. Corvette: anything else is just transportation.
St. Jude Donor '09 thru '20
Thread Starter
Advanced
Joined: May 2008
Posts: 58
Likes: 0
From: where you can see the air Ca
Well i went to home depot and got the shut off valve and as i was standing over the engine getting ready to put the valve in line, I asked myself why I wasn't just running the upper hose to the outlet on the water pump completly bypassing the heater. So I did. It works great,and know I have this great shut off valve for a rainy day.
Thanks for all the input.
Thanks for all the input.
Team Owner
Joined: Jul 2006
Posts: 22,200
Likes: 4,187
From: Kannapolis NC
You probably should reconnect it occasionally and circulate that water out of the heater core. That's one of the reasons I used a valve, so I could flush the core periodically. You may also still need to stop that hot air from coming from the engine into your vents.
Advanced
Joined: Jan 2006
Posts: 55
Likes: 0
From: Munster IN
I put two valves in last summer. What a difference now my wife isn't afraid to set her feet or a water bottle on the floor, she was afraid the water would boil last summer. The valves are great because you can reopen at any time.
Le Mans Master
Joined: Jul 1999
Posts: 9,206
Likes: 17
From: Sewell NJ