#1  
Old 08-06-2020, 03:02 PM
dld's Avatar
dld dld is offline
Ultimate Warrior
 
Join Date: Dec 2009
Location: MARYLAND 21061
Posts: 2,055
Default 70 A/C vacuum connections

working on the A/C evap. box . these three lines of course come from dash control. is one of them for a vac. canister .

could someone post a pic of what it looks like . I looked in assembly manual and nothing in there

Thanks Don
Attached Thumbnails
Click image for larger version

Name:	DSCN2125.jpg
Views:	147
Size:	80.8 KB
ID:	546549   Click image for larger version

Name:	DSCN2124.jpg
Views:	141
Size:	62.4 KB
ID:	546550  

  #2  
Old 08-06-2020, 04:45 PM
eaglesan13 eaglesan13 is offline
Ultimate Warrior
 
Join Date: May 2002
Location: California
Posts: 2,593
Default

The picture of the canister mounted to the firewall was taken of a 1970 Formula 400, four speed, a/c car.
Attached Thumbnails
Click image for larger version

Name:	IMGP6920.jpg
Views:	130
Size:	65.8 KB
ID:	546551   Click image for larger version

Name:	IMGP7703.jpg
Views:	111
Size:	29.5 KB
ID:	546552  

  #3  
Old 08-06-2020, 05:09 PM
dld's Avatar
dld dld is offline
Ultimate Warrior
 
Join Date: Dec 2009
Location: MARYLAND 21061
Posts: 2,055
Default

Quote:
Originally Posted by eaglesan13 View Post
The picture of the canister mounted to the firewall was taken of a 1970 Formula 400, four speed, a/c car.
excellent big help!

could you share the color code of where the lines go . looks like clear, blk, red

plenum door color

vac tank color

heater control valve color

  #4  
Old 08-06-2020, 05:28 PM
eaglesan13 eaglesan13 is offline
Ultimate Warrior
 
Join Date: May 2002
Location: California
Posts: 2,593
Default

That car is long gone, so I can't check the routing for you. I'm not sure what year you're working on, but this picture was taken from the 1970 F body supplemental shop manual.

It looks like black is your vacuum source, maroon is to the hot water valve, and the gray is to the purge diaphragm.

Quote:
Originally Posted by dld View Post
excellent big help!

could you share the color code of where the lines go . looks like clear, blk, red

plenum door color

vac tank color

heater control valve color
Attached Thumbnails
Click image for larger version

Name:	IMG_1597.jpg
Views:	151
Size:	116.2 KB
ID:	546554  

  #5  
Old 08-06-2020, 05:43 PM
dld's Avatar
dld dld is offline
Ultimate Warrior
 
Join Date: Dec 2009
Location: MARYLAND 21061
Posts: 2,055
Default

Quote:
Originally Posted by eaglesan13 View Post
That car is long gone, so I can't check the routing for you. I'm not sure what year you're working on, but this picture was taken from the 1970 F body supplemental shop manual.

It looks like black is your vacuum source, maroon is to the hot water valve, and the gray is to the purge diaphragm.
THANKS that helps

  #6  
Old 08-06-2020, 06:08 PM
eaglesan13 eaglesan13 is offline
Ultimate Warrior
 
Join Date: May 2002
Location: California
Posts: 2,593
Default

It looks like that vacuum check valve in the black (source) vacuum hose is available from Ames Performance Engineering, part number FP341B ($12.00).

  #7  
Old 08-06-2020, 06:34 PM
dld's Avatar
dld dld is offline
Ultimate Warrior
 
Join Date: Dec 2009
Location: MARYLAND 21061
Posts: 2,055
Default

From the pic in post 2 the vacuum motor has two ports used . Mine (as pic shows) only has one open .

yes my car is a 70
Attached Thumbnails
Click image for larger version

Name:	DSCN2128.jpg
Views:	93
Size:	48.8 KB
ID:	546558  

  #8  
Old 08-06-2020, 06:40 PM
dld's Avatar
dld dld is offline
Ultimate Warrior
 
Join Date: Dec 2009
Location: MARYLAND 21061
Posts: 2,055
Default

But in the diagram post . it looks to show vac motor to not use that port .

Diagram also shows NO vacuum. tank . I don't recall the vac tank on my car . so that makes sense

  #9  
Old 08-06-2020, 09:30 PM
Formulabruce's Avatar
Formulabruce Formulabruce is offline
Ultimate Warrior
 
Join Date: Nov 2004
Location: North East of AMES PERFORMANCE, in the "SHIRE"
Posts: 9,363
Default

( Refer to post #2 above ) The black "Vac tank" on the firewall has nothing to do with AC directly. It gets hooked to the choke pull off on the Q-jet. It is only on a formula 400, NON Ram air cars, that I have seen. I have NOT seen them on a factory 2bbl 400 either.

  #10  
Old 08-07-2020, 11:52 AM
dld's Avatar
dld dld is offline
Ultimate Warrior
 
Join Date: Dec 2009
Location: MARYLAND 21061
Posts: 2,055
Default

Quote:
Originally Posted by Formulabruce View Post
( Refer to post #2 above ) The black "Vac tank" on the firewall has nothing to do with AC directly. It gets hooked to the choke pull off on the Q-jet. It is only on a formula 400, NON Ram air cars, that I have seen. I have NOT seen them on a factory 2bbl 400 either.

I found it in catalog .

Thanks for your help. Don

  #11  
Old 09-16-2020, 06:52 PM
MMunger MMunger is offline
Junior Member
 
Join Date: Feb 2020
Location: Lake Tapps, WA
Posts: 26
Default

Just reading this thread now. Not sure if you need any additional images, but my '70 T/A is an A/C car.
Car was fully restored when I got it, so I probably can't answer any assembly questions but am more than will to get you pics of whatever you need.

Mike

  #12  
Old 09-17-2020, 11:59 AM
dld's Avatar
dld dld is offline
Ultimate Warrior
 
Join Date: Dec 2009
Location: MARYLAND 21061
Posts: 2,055
Default

Quote:
Originally Posted by MMunger View Post
Just reading this thread now. Not sure if you need any additional images, but my '70 T/A is an A/C car.
Car was fully restored when I got it, so I probably can't answer any assembly questions but am more than will to get you pics of whatever you need.

Mike
Thank you , everyone likes to see pics of our cars . post a pic of engine and A/C area . Would lov to see it

Don

  #13  
Old 09-17-2020, 12:57 PM
MMunger MMunger is offline
Junior Member
 
Join Date: Feb 2020
Location: Lake Tapps, WA
Posts: 26
Default

Hows this?


  #14  
Old 09-17-2020, 02:26 PM
MMunger MMunger is offline
Junior Member
 
Join Date: Feb 2020
Location: Lake Tapps, WA
Posts: 26
Default

OK, I posted one from the under hood but got a message it was waiting for admin approval before it will post.
Once that happens it should show up

  #15  
Old 09-17-2020, 02:35 PM
dld's Avatar
dld dld is offline
Ultimate Warrior
 
Join Date: Dec 2009
Location: MARYLAND 21061
Posts: 2,055
Default

Quote:
Originally Posted by MMunger View Post
OK, I posted one from the under hood but got a message it was waiting for admin approval before it will post.
Once that happens it should show up
never heard of that . didn't have a MAGA sticker on firewall did it ..LOL

  #16  
Old 09-17-2020, 03:22 PM
MMunger MMunger is offline
Junior Member
 
Join Date: Feb 2020
Location: Lake Tapps, WA
Posts: 26
Default

I posted some images yesterday in the "WTB Cars" thread since I got the car I had been looking for and got the same message then as well.
Maybe because I have a low post count being new?

  #17  
Old 09-17-2020, 08:20 PM
Formulabruce's Avatar
Formulabruce Formulabruce is offline
Ultimate Warrior
 
Join Date: Nov 2004
Location: North East of AMES PERFORMANCE, in the "SHIRE"
Posts: 9,363
Default

should be all set in a few days usually

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:22 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017