heater core hoses connect to what?
 

I was looking under the hood last night and saw two hoses comming out of firewall, its from heater core, but they weren't connected, where do they connect?
I took heater core out and pressure tested heater core with water for about a minute up to 8 psi and it held water and pressure good. i drained the water and put it back in so i am not sure why previous owner had it disconnected. I checked everything around. All hoses are on and no open pipes/ hoses anywhere. I suspect it goes to metal pipe running along the engine on passenger side and the other hose just behing the engine, but i do have a hose there. Bypassed? Any ideas especially pictures would be muchly appreciated. thanks.

here's a pic of the loc i think one of the hoses is supposed to be attached to, let me know if i am right
http://i115.photobucket.com/albums/n...Porsche801.jpg

The hose you have circled goes to the heater core. The front of the metal tube is connected to the outlet of the water pump.

The other side of the heater core goes to the heater control valve located at the back of the head.

JM
:cool:

Dan, is this your actual car. Looks like the parts are there. May be jumpered inside the car. If not, I have the external parts. That list I gave you for parts has the little 4 inch hose on the front end of that pipe. Goes down between the oil filter and head to the water pump.

I am guessing the reason it was bypassed is because the heat was probably always on. That is a common problem for this car and a very simple 3 dollar fix. If after you hook it up and the heat runs all the time, then take a look at this link and it will let you know how to fix it.

http://www.kronowit.com/porsches/944-heater-fix.html

My heater core is disconnected as well, an aftermarket hose runs between the two connections at the back of the engine. I thought that the PO disconnected it because it leaked. Is there a way to Pressure test the HC in the vehicle? A simple fix would be sweet. I am not looking forward to doing a heater core. (sorry for the small hijack dan)

Sure. Get a hose and clamp it on one side of the heater core outlet and put a plug on the other side (or a small piece of hose with a bolt in it). Put a small pipe with an air valve stem in the end of the other hose and put about seven pounds of pressure in there. Check the pressure a few minutes later and see if it is holding. You may also try capping one side of the core and then put a hose on the other side and see if you can blow through it. That will give you an idea, but it's not as good of a test as the pressure test.