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Registered
Join Date: Sep 2006
Location: Winnipeg, MB, Canada
Posts: 222
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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 
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Dan '84 944 - Under construction '77 924 - Sold '05 Jeep Liberty '98 Acura Integra Last edited by dan476; 12-06-2006 at 07:09 AM.. |
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12-06-2006, 07:00 AM
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Registered
Join Date: Nov 2002
Location: Burlington, NC
Posts: 230
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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 
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12-06-2006, 07:33 AM
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Join Date: Nov 2004
Location: Ontario, Canada
Posts: 525
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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.
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87 924S 107k (miles) yellow 1969 Firebird Coupe (Full frame off restoration.) 98 BMW 740i 2020 Subaru Outback and 2019 Crostrek. |
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12-06-2006, 09:10 AM
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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
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Tom 1990 944S2 Cabriolet 2002 Chevy Silverado 2500HD 2003 Maroon Ford F350 dually |
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12-06-2006, 11:06 AM
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Automotive Necromancer
Join Date: Nov 2006
Location: Beantown, MA
Posts: 1,544
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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)
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There may be nothing quite as expensive as a cheap Porsche: Ruby Red 84 928S : White 87 924s 2.5L NA (Blinky) M44/07-43H10676 spoiler delete - 046/2B - Belts 9/12, Clutch and OC seals 8/08 andd Red 94 Del Sol: Please put your Make, Model and Year in Sig. Try not to break more than you fix. |
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12-06-2006, 08:13 PM
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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.
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Tom 1990 944S2 Cabriolet 2002 Chevy Silverado 2500HD 2003 Maroon Ford F350 dually Last edited by Razorback1980; 12-07-2006 at 04:41 AM.. |
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12-07-2006, 04:38 AM
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