alvaro quinonez Posted February 11, 2011 Share Posted February 11, 2011 I have a subaru outback legacy 1999. The car is overheating, I have done everything except check the heater hoses for blockage. Can you tell me where they are located? Quote Link to comment Share on other sites More sharing options...
bheinen74 Posted February 11, 2011 Share Posted February 11, 2011 (edited) Heater core hoses? those are alongside the firewall, kinda back by the starter. Sorry bud, you have joined the "HG Club". You most likely have classic headgasket failure. You should first check make sure the fans are connected, and they turn fine. You could try to replace the radiator cap with a new one. Add coolant to the correct level on the overflow tank. Make sure the radiator had been burped well. When the car is running, do you see bubbles in the overflow tank? Edited February 11, 2011 by bheinen74 added more info help Quote Link to comment Share on other sites More sharing options...
Suzam Posted February 11, 2011 Share Posted February 11, 2011 How about a little more info. How many miles on the engine? Can you explain the overheating scenario better? When, where, how, etc. Quote Link to comment Share on other sites More sharing options...
johnceggleston Posted February 11, 2011 Share Posted February 11, 2011 read this and then comment / ask: http://www.ultimatesubaru.org/forum/showthread.php?p=911632&highlight=badheadgasket*#post911632 Quote Link to comment Share on other sites More sharing options...
alvaro quinonez Posted February 11, 2011 Author Share Posted February 11, 2011 dear bheinen74, the fans are connected and seem to turn fine I will do the voltage test on the fans later but from what I see they are fine and the blades are not broken. I have not checked the radiator cap. The things I have checked and the symptoms are listed below. I have not checked for bubbles in the overflow tank but i searched on youtube how to burp but i do not believe that is the problem. dear suzam, to be more specific on my overheating problem. When I drive for 10-15minutes everything is fine and heat begins to work correctly. Then at 20-30 minutes the overheating begins. I pulled over at about 45minutes and popped the hood. I found light steam coming from the right fan or radiator or overflow tank (I am not sure where it is coming from.) The things I have done to correct and troubleshoot the overheating are the following. I installed a new water pump, thermostat, radiator, engine coolant temperature sensor, i checked all the relays and fuses. Prior to doing these repairs, my father allowed a mechanic to cut a hole thru the thermostat, the heat actually worked but the car still overheated. The overheating would happen when the heat was off and turning the heat on lowered the temperature reading back to normal. The heat hoses I am looking for are discussed in my repair book but not illustrated. I was wondering if the hoses were possibly on the picture I posted. The heat hoses are said to carry heat to the heater core and are located at the firewall. Thanks for your help everyone and to the last guy, I will check that link out I appreciate all your help everyone. Quote Link to comment Share on other sites More sharing options...
alvaro quinonez Posted February 11, 2011 Author Share Posted February 11, 2011 Dear suzam, I also forgot to mention what happens to the air when my car begins to overheat (at about 20-30 minutes after starting car.) It turns cold even if I have it set on hot. The a/c works fine. Quote Link to comment Share on other sites More sharing options...
bheinen74 Posted February 11, 2011 Share Posted February 11, 2011 classic HG description, key is about 15-20 minutes, the exhaust gases are super heated and blowing into the coolant. You have bubbles. Quote Link to comment Share on other sites More sharing options...
alvaro quinonez Posted February 11, 2011 Author Share Posted February 11, 2011 (edited) ! Edited February 11, 2011 by alvaro quinonez Quote Link to comment Share on other sites More sharing options...
nipper Posted February 11, 2011 Share Posted February 11, 2011 What is everything you have done and how many miles. Quote Link to comment Share on other sites More sharing options...
alvaro quinonez Posted February 11, 2011 Author Share Posted February 11, 2011 everyhing i have done is listed in discussion #5 and #6 my mileage is 150k Quote Link to comment Share on other sites More sharing options...
The Dude Posted February 11, 2011 Share Posted February 11, 2011 You probably have a blown head gasket. However, you may want to have the coolant checked for exhaust gases before you undertake an extensive repair. You have a 2.5L Phase 1 DOHC engine, which is known for internally blown head gaskets. There is a huge amount of information on blown 2.5L Phase 1 head gaskets on this board. Diligent use of the "search" function will tell you everything you need to know. Although you are most welcome to post any additional questions that you may have. Quote Link to comment Share on other sites More sharing options...
alvaro quinonez Posted February 11, 2011 Author Share Posted February 11, 2011 awesome "the dude" thank you. Quote Link to comment Share on other sites More sharing options...
nipper Posted February 11, 2011 Share Posted February 11, 2011 Where did you get the thermostat from. Was the car due for a water pump change? Have you replaced the radiator cap yet (not check it out but replace it) Did you properly fill the cooling system? Quote Link to comment Share on other sites More sharing options...
Fairtax4me Posted February 11, 2011 Share Posted February 11, 2011 Heater hoses look like this: http://www.subarupartsforyou.com/cp_partdetail.php?partid=15891 Quote Link to comment Share on other sites More sharing options...
johnceggleston Posted February 11, 2011 Share Posted February 11, 2011 i would look at the head gaskets hard before you spend any more time on the heater hoses. you likely will be wasting your time and maybe money on the heater. Quote Link to comment Share on other sites More sharing options...
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