Climate control vacuum diagrams?

GEORGEBESSEY

MEMBER
1993 DODGE CARAVAN
6 CYL
FWD
AUTOMATIC
174,272 MILES

I replaced the heater core In the 93 caravan. Now, I'm Still not getting warm air. I believe the vacuum controlled valve and hoses are not correctly installed. I cannot find a diagram or picture of the correct routing. I have confirmed that the control valve is operating properly. Also need to know which side of the heater core is the inlet and outlet. Pictures or a diagram would definitely help. I Also plan on comparing this van to another fully functional one.

6 Replies

BMRFIXIT

MECHANIC
19,053 POSTS

You have two hoses if not one way than its the other no diagram for that but here is a guide to help fix the heat.

https://www.2carpros.com/articles/car-heater-not-working

Please run down this guide and report back.

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Thursday, January 6th, 2011 AT 11:22 PM

GEORGEBESSEY

MEMBER
4 POSTS

But the vacuum operated valve has 3 hose connections. This is what I need a picture or diagram of. I have already addresses everything else in your list.

Was this

answer

helpful?

Yes

No

-1

Thursday, January 6th, 2011 AT 11:39 PM

BMRFIXIT

MECHANIC
19,053 POSTS

Here is the vacuum hose routing for the hvac system. Check out the diagrams (Below). Please let us know what you find.

Image (Click to make bigger)

Was this

answer

helpful?

Yes

No

Thursday, January 6th, 2011 AT 11:44 PM

GEORGEBESSEY

MEMBER
4 POSTS

The vacuum operated valve that allows hot coolant to flow through the heater core. It has three hose ports and one vacuum tube. I found a blend door actuator that was stuck thanks to the guide all fixed!

Was this

answer

helpful?

Yes

No

Friday, January 7th, 2011 AT 12:06 AM

BMRFIXIT