Heater core Bypass...Looking for thoughts...
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
The only thing I actually did was peel pack the vacuum line to a good section, as the exposed section linked pretty flakey. Its possible that wasnt working, but I still don't see it moving...should you see it moving with the AC in different modes?
great responses that I appreciate! Stuff I never considered. I'm thinking of some sort of shut off valve on the coolant line for the hot summers here...anyone do that?
Dan
great responses that I appreciate! Stuff I never considered. I'm thinking of some sort of shut off valve on the coolant line for the hot summers here...anyone do that?
Dan
The only issue I had was after running on max for months we had one day where the temp got down to 65-70. I switched to normal cool and got a mildew smell from the vent because the valve opened and I had no circulation for so long. It cleared up in about 30 min. So now I run the normal cool or vent often for just a while to keep the circulation active. One of the best mods I have done. There is also a double hose valve available but it is not necessary. Sandy
Lead Driver
Joined: Jul 2017
Posts: 9,606
Likes: 1,175
From: San Jose, CA
Very clever! So that "blend door" valve on the plenum is really just a shut-off door for MAX-cool then? I have not studied the system enough to know that stuff. Good to find out!
A good add to the thread. I live in a pretty mild climate so never had to think about the A/C needing a few more degrees of help. I don't mind doing that mod at all though, even here.
Paul
A good add to the thread. I live in a pretty mild climate so never had to think about the A/C needing a few more degrees of help. I don't mind doing that mod at all though, even here.
Paul
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
[QUOTE) So that "blend door" valve on the plenum is really just a shut-off door for MAX-cool then?
Yes. MAX is the only setting that does this. Every other setting and the valve opens for circulation. Sandy
Yes. MAX is the only setting that does this. Every other setting and the valve opens for circulation. Sandy
Lead Driver
Joined: Jul 2017
Posts: 9,606
Likes: 1,175
From: San Jose, CA
Bitchin. Since my white tube is busted off at the valve anyway, I have to fix it along with the other tired old plastic tubes. I'll do the T-thing right along with it.
Do you remember the application for the valve? We carry the mechanical ones for the old Broncos, but that's a very slick vacuum operated one.
Thanks
Paul
Do you remember the application for the valve? We carry the mechanical ones for the old Broncos, but that's a very slick vacuum operated one.
Thanks
Paul
Carpenter Local 745
Joined: Apr 2006
Posts: 5,794
Likes: 11
From: on da beach
I cheated and completely unhooked my leaking heater core for the reason stated above. Not the best choice, but an easy one.
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