Heater Core Flush on a 2009 Subaru Forester
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- Опубликовано: 8 авг 2024
- The heating system on the Subaru was blowing hot air out the driver side vents and cold air out the passenger side vents. I suspected that a blockage inside the heater core was to blame and decided to do a video on how to backflush material out of a heater core.
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Great work on flushing that heater core and documenting everything. It’s a good idea to burp the coolant whenever replacing it. Subarus are notorious for overheating sometimes just for having trapped air bubbles in the cooling system.
Mike, that is a great point! Burping the system is important. Thanks for taking the time to point that out. I appreciate the feedback!
I think I did a good job burping it. Tell me if this is right. I took the top off the radiator and while it was running I carefully squeezed the main hose going into it and saw air and coolant come out of the top then refilled it. I hope I got all the air out. If there is still some in it could I tell from other issues?
@@kevinFJ What you did helps, but to properly burp the air, you need a coolant filling funnel kit from Amazon for about $20. Watch a video here on RUclips on how to properly burp coolant from a Subaru. MrSubaru1387 has a video. Good luck!
Great info, thanks!
Thanks so much for this video. You really save me $120.00 that a mechanic was about to charge me to do the same jog that you show in this video.
No problem Rafael, I’m glad it saved you some money. And congratulations on tackling it yourself. Thanks for watching and thank you so much for taking a few moments and leaving the comment.
I absolutely love the item numbers and specifics for the tools required. This should be standard if it's something specific like that hose
Yeah, it should be standard!
I have a 2008 Subaru Impreza, Just did mine today and the heat works great now. Thanks!
How did it turn out?
Thanks for this video. Easy to understand, and well laid out. I flushed the core and got heat back on the passenger side. I also burped the system as Mike_44 mentioned. My hoses were actually marked with arrows showing the input and output (though I also checked by feeling them).
Glad it helped
Good work. Thanks! Also, heater issues can be from air in the system, so make sure to bleed it thoroughly.
That is a good point Matt, thanks for pointing that out. Making sure you push all the air out of the core and your radiator system is important for the best heating/cooling efficiency.
Thank you for the video, the heat was working on the passenger side but not the driver side, now it I don't get any heat anymore, it's actually cold. I will try that and let you know how it goes. Thanks again for the detailed instructions
You're welcome!
Clear informations, precise and very well detailled with the right tools .Thanks!!!
Thanks!
Thank you. Tried it on 2005 Subaru Outback. Same issue. It is fixed.
That’s great! I am really happy you got it fixed. Thanks for letting me know!
Just tried this on my 2013 Legacy and it worked to finally fix my heat issue. What a huge help. Thank you
I’m really happy to hear that! Thanks for your comment and for watching.
Thank you I can do this on my 2008 Subaru Outback. Very helpful video.
James, If you’re having the same issue, I am pretty positive you’ll see some big improvements. Thank you for watching and taking the time to leave a comment. I really appreciate it. Stay warm!
Belize is such a beautiful place. Hopefully you get to move there man keep up making good content.
I hope so too!
I do mine same way except I use CLR with a recirculation pump for an hour them a good flush for heater core. Top up the system with coolant and bleed it. Works good.
Thanks for the comment Anza. Some people have told me CLR could help. It’s important to remember that CLR recommends that you avoid letting their product come in contact with brass, copper, aluminum, and galvanized metals. Be 100% sure your heater core is not constructed of those metals before using CLR. Source: clrbrands.com/Products/CLR-Household/CLR-Calcium-Lime-and-Rust-Remover
This was extremely helpful. Thank you so much!
I’m glad it helped you out Sam! Thanks for the comment.
exactly what i needed to see thanks brother
Happy to help, thanks for watching.
I have the same problem with my 08 Outback. Blows hot on driver side and cold on pass side. I’m thinking it’s the blend valve thingy behind the glovebox. That’s today’s mission…
Thanks for the video!
How did it turn out?
Awesome video can’t wait to try it.
Let us know how it turns out!
@@maintenanceman1503 well I did it. It wasn’t easy getting one of the hoses off in fact I cut into it while grabbing it with pliers so I had to cut it and work with what was left. After it was off it went smoothly. Ran the water through it until it became clear then I reattached the hoses, which was a hassle again but I got there. Final result was it worked. So far. See what happens. Thank you for your video wouldn’t have known what to do without it. Thanks again.
Good to hear! Thanks for the follow up and details of how it went. You saved yourself a bunch of money.
5/8” ID is also a standard garden hose. If, like me, you might have one around you can cut up.
Great idea. The extra length from a piece of old garden hose would help you run it to a bucket. Thanks for the comment!
Great Video! Especially when that squirrel crawls into your brain at around 3:00! LOL Cheers!
But seriously, great how to. I have overheating on my daughter's 2010 OBW. TStat didn't fix it, so going down the list. Thanks again!
Glad you enjoyed it
3 words for you : Liked, commented, subscribed.
Welcome aboard!
Thank you!!!
Your welcome Edwin!
Great guy
Thanks!
Thanks for the well put together explanation! I'm curious if your Subaru was also running on the hot side when you were having this problem? My issue with a 2008 Outback is the engine is running hot and the heater blows cold air.
No, our Subaru did not show signs of running hotter than normal. However it makes sense that if your heater core is clogged, then a similar amount of sediment may have built up in your radiator too. A clogged radiator would be less efficient and could cause your vehicle to run hot.
Where did you buy the hoses that you can plug into your heater core
I bought them at Lowe’s hardware store
@@maintenanceman1503 🙏 Thanks
Would you say that the heater is nice and "hot" now on both sides? My forester has heat on just one side, have flushed it a while ago and it's good for about a week then returns to its miss matched heat.
Might give it another go!
Yes, flushing it returned heat to BOTH sides. I agree with you, a second flush may be the way to go.
@@maintenanceman1503 that's great! Assuming it's still going strong ?
Yup!
Yo soy tú fan
¡Gracias Jovanny! Me siento honrado.
My mechanic did this several times to my Impreza 2008 but it’s still cold air . Head gasket and water pump was changed too . Still don’t know what to do. Car runs good but no heater
It may be your air conditioning louvers, Ali.
Air from you blower fan travels through vents in your dash and floorboard to reach the vents and blow inside the vehicle. Vents are basically corridors for air to travel down, Louvers act like “doors” that allow air down certain corridors. One of your lovers directs air through vents in the dash or moves to direct air through vents towards the floorboard. Another of your louvers is a “mixer” which changes to allow only cold air,only hot air, or to mix cold air and hot air together to make warm air.
If your mixer louver is stuck to only allow cold air in (and to keep out hot air) that may be your problem.
I need to know where I can find a video for a 2017 forester...I get everything else but what I'm looking for. Does anyone know where the F I can find the EXACT info I'm looking for?
I’ll try to find something. Just to confirm, you are looking for a video on how to do a heater core flush on a 2017 Forester?
I hope your flush worked, my heater core got plugged and exploded. I just spent 5 hours tearing the entire dash apart to replace a $40 part. Whoever engineered the thing should be smacked upside the head of few times..
Oh man.. that would have irritated me too!
Always use a no spill funnel with these engines.
Great idea, less mess!
ummm, my Jeep has issues like that... I will investigate further, thanks
Probably a similar technique can be used on your jeep. Good luck!
Anyone peep the squirrel?
Squirrel remains un peeped