Too Hot Inside Car
Team Owner
Joined: Jun 2001
Posts: 43,136
Likes: 155
From: Thomson Georgia
Check your catalytic converter. I had the same problem on my 79 so I pulled the carpet out and noticed a black spot on the floor under the passengers seat. I started the car and watched the cat heat up until it was red like a cherry. It was clogged and heating up the cockpit like an oven. Replaced the cat and solved the heat problem.
Smart Move
Burning Brakes
Joined: Aug 2005
Posts: 1,126
Likes: 0
From: Hudson Falls, N.Y. 76 Vette Modified L-48
45 minutes, tops, to do it and the world of difference...but don't forget the shut off valve...that is also a major factor for the heat
Last edited by kb2fzq; Oct 7, 2007 at 05:53 AM.
Safety Car
Joined: Nov 2004
Posts: 4,359
Likes: 57
From: Mundelein Illinois
Another thing to do is use 3M dum dum around heater and AC box. Run a bead of 3M around the box and firewall, around fan motor and heater box and the center seam of the AC box. You won't beleive how much hot air gets sucked in from the motor. My car was reading 98 degrees from the center vents. when I finished the above it dropped to outside temp.
View of the bottom of the AC box
A new hood seal is a must as mentioned earlier
Hope this helps
View of the bottom of the AC box
A new hood seal is a must as mentioned earlier
Hope this helps
Last edited by spedaleden; Oct 7, 2007 at 08:25 AM.
Team Owner
Joined: Nov 1999
Posts: 26,679
Likes: 17
From: This vette goes to 11 Milford MA
St. Jude Donor '03-'05
Check your catalytic converter. I had the same problem on my 79 so I pulled the carpet out and noticed a black spot on the floor under the passengers seat. I started the car and watched the cat heat up until it was red like a cherry. It was clogged and heating up the cockpit like an oven. Replaced the cat and solved the heat problem.
