frank_ster Posted March 25, 2012 Share Posted March 25, 2012 ^ yea .. Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
dgrix Posted March 25, 2012 Share Posted March 25, 2012 Yes please. I want to see how to fix my door issue. I only have heat and AC blowing to my face but no where else. ANd I have the dual HVAC. I will have to take a new video. I can't seem to up load my video (MTS file) GT has electric controls... For the 2.5i, and where this thread really applies, we have manual or cable driven actuators. Yours may have been a distinct problem, but with the same/similar symptoms. Ahh sorry thought what I noticed might help.. my mistake. Link to comment Share on other sites More sharing options...
ssbtech Posted April 13, 2012 Share Posted April 13, 2012 UPDATE!! Just wanted to confirm that flushing + reverse flushing the two heater core lines solved the no hot air problem for my passenger side vents. Now my passenger side blows nice and warm! Thanks for the help guys! It's nice when things work out Link to comment Share on other sites More sharing options...
ssbtech Posted April 13, 2012 Share Posted April 13, 2012 My dealer was all-set to change the heater core until I asked them to try the flush/backflush. Saved myself a lot of labour! Link to comment Share on other sites More sharing options...
TonyD Posted January 2, 2013 Share Posted January 2, 2013 I have just come across some of these symptoms this morning - with a slight twist, anyone have any suggestions or thoughts? 2006 Subaru legacy: Hot air blows only on drivers side, cold air on passenger side. When I have the mode selected to blow through the top vents, my temperature gaugse points in the red - when I switch the mode to blow on the floor, the gauge comes down to normal operating temperature (in the middle). Does this sound like the heater core? Link to comment Share on other sites More sharing options...
frank_ster Posted January 2, 2013 Share Posted January 2, 2013 the temperature gauge should not move in relation the vent selector. unless your engine is about to die ! .. does the gauge move with in 1 second up and down ? or over a couple minuets? check your coolant level in the radiator and the reservoir with engine cold. and make sure your engine cooling fans are working! .. Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
Alex H Posted January 4, 2013 Share Posted January 4, 2013 I have just encountered this for the second time in two years on my 2005 GT wagon.... passenger side only on both occasions. problem is rust particles clogging the system; thorough flushing takes care of it. what a pain. the real worry is why so much rust. Link to comment Share on other sites More sharing options...
GEE-OTTO Posted January 22, 2013 Share Posted January 22, 2013 Just happened to me this morning (12 F outside) my shop of choice cant do the flush so I fear I may be forced to the dealer Anyone know of a shop in NoVA that can do the flush? I dont have access to a hose to power flush the core :/ Link to comment Share on other sites More sharing options...
frank_ster Posted January 23, 2013 Share Posted January 23, 2013 ^ well is it a rush to fix? i under stand its annoying .. but for the love of god dont take it to the dealer.. Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
GEE-OTTO Posted January 23, 2013 Share Posted January 23, 2013 ^ well is it a rush to fix? i under stand its annoying .. but for the love of god dont take it to the dealer.. Was thinking about this on the way home, there is only 5weeks or so left of "cold" weather here in the Mid Atlantic as long as my driver side is warm i can deal. The passenger well theyll need a scarf Link to comment Share on other sites More sharing options...
frank_ster Posted January 23, 2013 Share Posted January 23, 2013 supposed to be -36 tonight with the wind here got my car plugged in! Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
ssbtech Posted January 23, 2013 Share Posted January 23, 2013 I'd be flushing it sooner than later. Delaying it might only make it harder to clean later on. Link to comment Share on other sites More sharing options...
Deer Killer Posted February 3, 2013 Share Posted February 3, 2013 Flush fix confirmed. Manual flush with garden hose and compressed air + running with pure distilled water not very effective. Hooked up hoses backwards and ran engine with Peak coolant flush and water, and I saw the temps start to equalize. Not sure if I should leave the heater core hooked up backwards or not when I refill now. Link to comment Share on other sites More sharing options...
Deer Killer Posted February 3, 2013 Share Posted February 3, 2013 Also, this thread should be stickied. Link to comment Share on other sites More sharing options...
ssbtech Posted February 3, 2013 Share Posted February 3, 2013 It's the backflush that's important. Somehow a refular "forward flush" isn't doing the trick in most cases. Link to comment Share on other sites More sharing options...
frank_ster Posted February 4, 2013 Share Posted February 4, 2013 yea and you can leave the heater core connected backwards.. but then the passenger side should have more heat ??right? Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
Deer Killer Posted February 4, 2013 Share Posted February 4, 2013 No. If it went from driver to passenger we would not happen. It's build like a T with the passenger side at the bottom, which means all the crap goes there and collects regardless of the direction of flow. My flush was not as good as I thought, going back to 20F outdoor temp, it's not as good as I would like. Perhaps it will clear up with more driving. I gained 1.5 mpg on my drive this morning, I didn't think my coolant was in bad enough shape to do that but *ok* I'll take it. Link to comment Share on other sites More sharing options...
keepclam Posted February 14, 2014 Share Posted February 14, 2014 Add me to the list of victims. My '06 SE sedan (single zone, manual control HVAC) with 78k miles started exhibiting this problem: little to no heat on the passenger side only, but with seemingly appropriate airflow. It's at the shop now. I forwarded this thread to the service manager. This is the first problem we've had with our nearly 8-year-old Subie (though low miles). Hopefully it's indeed something this simple (and, more importantly, cheap!!) and not a core replacement. Are there any known TSBs on this issue? I'll concur that this thread should be stickied. Thanks, folks! Link to comment Share on other sites More sharing options...
frank_ster Posted February 14, 2014 Share Posted February 14, 2014 i just flushed with air hose both directions on my 2.5i and perfect heat both sides again Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
ssbtech Posted February 14, 2014 Share Posted February 14, 2014 Don't bother forwarding the thread to the service manager, just ask them to flush and backflush the heater core and keep doing so until it runs clear. The important bit is the doing just the heater core. Dealers will often just flush the entire cooling system and that won't work. Link to comment Share on other sites More sharing options...
ej25_TS Posted March 7, 2014 Share Posted March 7, 2014 Doing mine now. The shop said the core looks good though. Hope they did a good job for flushing it. Sent from my SGH-I337M using Tapatalk Link to comment Share on other sites More sharing options...
dellguy3700 Posted March 7, 2014 Share Posted March 7, 2014 I tried all manners of flushing the heater core. It helped the first winter. Not so much the second winter. Ended up replacing it and it is wonderful now... Link to comment Share on other sites More sharing options...
ssbtech Posted March 7, 2014 Share Posted March 7, 2014 Did you get any photos of the heater core or cut it open? I'd love to see how it's only plugging up on the one side. Link to comment Share on other sites More sharing options...
frank_ster Posted March 8, 2014 Share Posted March 8, 2014 How long to change the heater core ? Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
dellguy3700 Posted June 18, 2014 Share Posted June 18, 2014 I still have my old heater core I should cut it and post the pics. It took all night to change it out. I want to say 10ish hours... Link to comment Share on other sites More sharing options...
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