Rear heat lines from radiator

Forum rules
This is NOT the place to post topics that could be better classified in another category. Please make every attempt to post in an appropriate category before posting here.

Please help us keep topics organized by making an effort to find an appropriate category before posting here. More often than not the posts in this forum could be moved to a better suited category.

Rear heat lines from radiator

Postby AstroOafAdventurer [OP] » June 10th 2021, 10:43pm

My conversion van has lines tapped into the radiator that ran to the rear heat unit. I removed said unit and wish to remove the lines. When I removed the unit I just looped the circuit, but I can see they are hard lines coming from the radiator, it seems other vans have these as well after a trip to the JY.
For simplicity sake, any harm in removing the lines from the radiator and replacing them with plugs?
I'm about to do a cooling system flush and would like to do this at the same time.
Anyone know what size plug I'd need for them?
97 Astrofari Conversion Van 62k 64k miles, 65k miles
Original Poster [OP]
User avatar
AstroOafAdventurer
Site Contributor
Site Contributor
Firing on 4 Cylinders (L1)
Firing on 4 Cylinders (L1)
Posts: 415
Topics: 47
Joined: August 2020
Location: Fairfax, VA
Gender: Male
Alias (AKA): Thorsteenster
Van Model Year: 1997
Van Make/Model: Chevrolet Astro
Extra Info: RWD GMC grille

  • Similar topics
    Replies
    Views
    Author

Re: Rear heat lines from radiator

Postby MI_Ghost » Yesterday, 9:51am

Hard lines from the radiator are usually oil cooler on left side. Transmission cooler on right side. Rear aux heater is normally taken off the heater control valve below the alternator on the subframe.

Do you have a pic of these lines?
~Ghost
Ast' Cargo: 2001 Astro Cargo
Beauty: 2009 Impala LT
https://www.astrosafari.com/gallery/sea ... r_id=66010
User avatar
MI_Ghost
Firing on 4 Cylinders (L2)
Firing on 4 Cylinders (L2)
Years of Membership: MI_Ghost has been a member for 5 full yearsMI_Ghost has been a member for 5 full yearsMI_Ghost has been a member for 5 full yearsMI_Ghost has been a member for 5 full yearsMI_Ghost has been a member for 5 full years
Posts: 1462
Topics: 9
Images: 124
Joined: November 2015
Location: On The road Again! Great Lakes Based.
Gender: Male
Alias (AKA): Ghost
Van Model Year: 2001
Van Make/Model: Chevrolet Astro
Extra Info: Big White RWD Box

Re: Rear heat lines from radiator

Postby AstroOafAdventurer [OP] » Yesterday, 4:31pm

MI_Ghost wrote:Hard lines from the radiator are usually oil cooler on left side. Transmission cooler on right side. Rear aux heater is normally taken off the heater control valve below the alternator on the subframe.

Do you have a pic of these lines?


Sorry, no pic but they are on the passenger backside of the radiator. You make sense, I have no idea why I thought those were coolant lines lol. Evidently I didn't trace the lines very well from the rear!
I do want to remove the oil cooler at next oil change and trans lines at next fluid change.
Thanks for that, I'll check out the heater control valve.
I'll have to check my door codes, looking in the rear heat/AC unit install it looks like vans with YF7 package had the lines in place under the van but capped off.
97 Astrofari Conversion Van 62k 64k miles, 65k miles
Original Poster [OP]
User avatar
AstroOafAdventurer
Site Contributor
Site Contributor
Firing on 4 Cylinders (L1)
Firing on 4 Cylinders (L1)
Posts: 415
Topics: 47
Joined: August 2020
Location: Fairfax, VA
Gender: Male
Alias (AKA): Thorsteenster
Van Model Year: 1997
Van Make/Model: Chevrolet Astro
Extra Info: RWD GMC grille

Re: Rear heat lines from radiator

Postby Birdshake » Yesterday, 4:52pm

I wouldn’t recommend removing the trans cooler lines. If anything add an additional cooler inline with the radiator.
2005 4WD Astro Cargo
NP236 3.73 Eaton Posi
S10 HD Springs 3" blocks
245/75/16 BFG KO2
KYB Monomax
User avatar
Birdshake
Firing on 3 Cylinders (L1)
Firing on 3 Cylinders (L1)
Years of Membership: Birdshake has been a member for 9 full yearsBirdshake has been a member for 9 full yearsBirdshake has been a member for 9 full yearsBirdshake has been a member for 9 full yearsBirdshake has been a member for 9 full yearsBirdshake has been a member for 9 full yearsBirdshake has been a member for 9 full yearsBirdshake has been a member for 9 full yearsBirdshake has been a member for 9 full years
Posts: 371
Topics: 11
Images: 30
Joined: January 2012
Location: Vancouver BC
Alias (AKA):
Van Model Year: 2005
Van Make/Model: Chevrolet Astro
Extra Info: 4.3 4WD

Re: Rear heat lines from radiator

Postby MI_Ghost » Yesterday, 10:28pm

Birdshake wrote:I wouldn’t recommend removing the trans cooler lines. If anything add an additional cooler inline with the radiator.

^^I second this ^^
~Ghost
Ast' Cargo: 2001 Astro Cargo
Beauty: 2009 Impala LT
https://www.astrosafari.com/gallery/sea ... r_id=66010
User avatar
MI_Ghost
Firing on 4 Cylinders (L2)
Firing on 4 Cylinders (L2)
Years of Membership: MI_Ghost has been a member for 5 full yearsMI_Ghost has been a member for 5 full yearsMI_Ghost has been a member for 5 full yearsMI_Ghost has been a member for 5 full yearsMI_Ghost has been a member for 5 full years
Posts: 1462
Topics: 9
Images: 124
Joined: November 2015
Location: On The road Again! Great Lakes Based.
Gender: Male
Alias (AKA): Ghost
Van Model Year: 2001
Van Make/Model: Chevrolet Astro
Extra Info: Big White RWD Box

Re: Rear heat lines from radiator

Postby AstroOafAdventurer [OP] » Yesterday, 10:48pm

There's a leak, or evidence of a previous leak, in one of the lines.
When I bought it I took it in for a pre-purchase inspection and was told trans lines were leaking but suspect it may have been the oil cooler lines.
I've yet to see nary a drop under it but the area definitely shows signs of a leak, oily road grime caked on/build up.
Next oil change I wanted to remove the oil cooler, clean the area up and monitor for fluid leaks and replace trans lines if needed, or maybe an aftermarket cooler.
97 Astrofari Conversion Van 62k 64k miles, 65k miles
Original Poster [OP]
User avatar
AstroOafAdventurer
Site Contributor
Site Contributor
Firing on 4 Cylinders (L1)
Firing on 4 Cylinders (L1)
Posts: 415
Topics: 47
Joined: August 2020
Location: Fairfax, VA
Gender: Male
Alias (AKA): Thorsteenster
Van Model Year: 1997
Van Make/Model: Chevrolet Astro
Extra Info: RWD GMC grille


 
  • Related topics
    Replies
    Views
    Last post

Return to Uncategorized

It is currently June 12th 2021, 9:27pm

Uncategorized Forum
UncategorizedAn all-purpose area for Astro/Safari van related discussion. These forums typically contain van-related but ill-assorted topics unfit for any other category. General questions and information relating to Astro and Safari Vans only.
Moderators: Leeann_93, icebrrg3rd
To create a new topic in Uncategorized, click this button:
Previous topic Next topic
Recent Image Attachments
Attached by:
Attached by: Mmusicman
Mmusicman
in Uncategorized
Views: 830855
Comments: 16548
Date: Jun 10 '21
Time: 8:13pm
» Read last comment
Attached by:
Attached by: MI_Ghost
MI_Ghost
in Uncategorized
Views: 200
Comments: 9
Date: Jun 04 '21
Time: 8:37pm
» Read last comment
Attached by:
Attached by: Mmusicman
Mmusicman
in Uncategorized
Views: 830855
Comments: 16548
Date: Jun 02 '21
Time: 7:33pm
» Read last comment
Attached by:
Attached by: Mmusicman
Mmusicman
in Uncategorized
Views: 830855
Comments: 16548
Date: May 30 '21
Time: 4:57pm
» Read last comment
Attached by:
Attached by: 97cargocrawler
97cargocrawler
in Uncategorized
Views: 184230
Comments: 3068
Date: May 28 '21
Time: 8:01pm
» Read last comment
Sponsors

Who is online

Users browsing this forum: No registered users and 13 guests