Heater box to defrost - Second Generation Pontiac Firebird (1970 - 1981) - Firebird Nation

Jump to content


FirebirdNation.com is the premier Pontiac Firebird forum on the internet. Supporting Members do not see the above ads.
Photo
- - - - -

Heater box to defrost


  • Please log in to reply
4 replies to this topic

#1 one79firebirdguy

one79firebirdguy

    Firebird Newbie

  • Full Member
  • Pip
  • 11 posts
  • Gender:Male
  • First Name:Linwood
  • City:Whiteville
  • State or Province:NC
  • Country:USA
  • Year: 1979
  • Make: Pontiac
  • Model: Firebird
  • Engine: 4.9l 301
  • Transmission: Auto

Posted 14 May 2020 - 03:21 PM

Hi all, I am new here. I recently purchased a 79 Firebird Esprit all original. It has air conditioning. Heater core was bad so I am in the process of changing it. Got it in and heater box back together. Slid it back under the dash and noticed there is a gap between the defrost duct (I think? In middle of dash behind radio.) and heater box. I tried to take pics but it's really hard to see. I didn't remove the entire dash so I guess I'm kind of doing it the hard way. My question is, does anyone know if there is a piece that could be missing that connects the heater box to the defrost. The car never really produced air flow although the blower does work. It was dark when I removed the heater box last night so it could have been missing. Any help is greatly appreciated! Thanks!!

Attached Files



#2 Alaskanmutt

Alaskanmutt

    Firebird Oil Changer

  • Full Member
  • PipPipPip
  • 147 posts
  • Gender:Male
  • First Name:John
  • City:Mountain Home
  • State or Province:AR
  • Country:USA
  • Year: 1970
  • Make: Pontiac
  • Model: Firebird Esprit
  • Engine: 350
  • Transmission: M-21 4 speed

Posted 15 May 2020 - 07:13 AM

Probably a foam "gasket"

I seem to remember when I tore my first bird apart there was a 1/4 inch thick open cell foam gasket where certain parts slipped together.


You know you are old when you have to sdcroll to find your birth year.....


#3 one79firebirdguy

one79firebirdguy

    Firebird Newbie

  • Full Member
  • Pip
  • 11 posts
  • Gender:Male
  • First Name:Linwood
  • City:Whiteville
  • State or Province:NC
  • Country:USA
  • Year: 1979
  • Make: Pontiac
  • Model: Firebird
  • Engine: 4.9l 301
  • Transmission: Auto

Posted 18 May 2020 - 09:41 PM

Probably a foam "gasket"

I seem to remember when I tore my first bird apart there was a 1/4 inch thick open cell foam gasket where certain parts slipped together.

Ok great. Thank you!



#4 Aus78Formula

Aus78Formula

    Firebird Mechanic

  • Full Member
  • PipPipPipPipPipPip
  • 703 posts
  • Gender:Male
  • First Name:Ben
  • City:Sydney
  • State or Province:Other
  • Country:Australia
  • Year: 1978
  • Make: Pontiac
  • Model: Firebird Formula
  • Engine: 403 Olds
  • Transmission: Auto

Posted 20 May 2020 - 03:37 AM

No, it's a pressure gap for the defrost duct and meant to be there. Many cars have them should the top dash be covered up while fan runs.

#5 Alaskanmutt

Alaskanmutt

    Firebird Oil Changer

  • Full Member
  • PipPipPip
  • 147 posts
  • Gender:Male
  • First Name:John
  • City:Mountain Home
  • State or Province:AR
  • Country:USA
  • Year: 1970
  • Make: Pontiac
  • Model: Firebird Esprit
  • Engine: 350
  • Transmission: M-21 4 speed

Posted 22 May 2020 - 08:13 AM

Thanks for the correction Aus78

 

No, it's a pressure gap for the defrost duct and meant to be there. Many cars have them should the top dash be covered up while fan runs.

 

Thanks for the correction. I remember the gaskets but just not where, it was 35 years ago.


You know you are old when you have to sdcroll to find your birth year.....





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users