Subaru Common A/C Issues: How To Repair + Tips/Tricks To Keep Your A/C COLD This Summer!
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- เผยแพร่เมื่อ 27 เม.ย. 2024
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I have a 2009 Impreza. I appreciate how you continue to reference the older Subarus in your tutorials. The differences and how to fix things on those EJ series. Thanks
Yes!
Agree 100%
I have a 2010 2,5 Subaru outback. Problem with the AC, at start it blows cold air but not for long, about 5 minutes and than the clutch disengages. First I checked the clutch gap, it was 0,7mm, (to big) changed it to 0,35mm. That was not the solution, then I swapped the Horn relay with the AC relay, and that solved the problem. So a bad Relay was the problem.
Zip tie trick to tighten up A/C compressor cluch gap works great for me for 6+ years with my 2015 Forester XT. Still works today saved me alot of money and time.
Thank you, Mr. Subaru for demystifying these failure points. It really helped me check my own system for these common problems. I haven’t found another explanation of the A/C system in Subarus that is as simple and straightforward as yours.
While browsing for ratchets I randomly thought … I wish MrSubaru would do more of those “if you like this tool here’s who actually makes it and where you can get it cheaper” videos on TH-cam. They seem to be a big hit, hell I’d even take a compilation upload of past shorts you did in one big video. Some of the best tools I have are from you showing where the originals came from. Still waiting to pull the trigger on some nice foreign sockets 🤣
very good video Mr. Subaru, I'll have to look out for those issues before I have any problems with my 2 Foresters 👍
My friend's 2009 Forester 5-speed had a spectacular A/C failure about 6 years ago. He said he heard strange noises and smoke started pouring out from under the hood. Apparently the A/C compressor just SEIZED hardcore, and the serpentine belt kept trying to turn it and the belt started melting rubber on the pulley! The clutch got so hot that it MELTED the electrical coil and finally blew a fuse. I assume the seized compressor sent shrapnel through the entire system. I just cut the A/C belt off and he's been driving it that way ever since. Just recently made it to 250k miles, but man that car has had major issues from migrating valve guides to a release bearing failure causing a clutch explosion, to ignition coil failure and massive interior water intrusion. Oh and constant premature wheel bearing failures. He calls it his "little lemon" but hey, it still keeps going as long as the oil is topped off every 2k miles! :)
Thanks mate I appreciate the info.
I had the compressor clutch control relay go bad in my 2007 Outback. Easy replacement. That was three years ago and all still good.
Yup , my forester has leaking compressor line O’rings.. still blows cold.. but needs them
Good Info. Nice for DIYers.
Strong command of the language. Highly articulate. Thanks for the education.
Great video. My 2013 Impreza has a zippy sound when I turn on my AC. Still working though.
If the compressor won't come on I've seen several broken ambient air temp sensors. their location in front of the condenser might be the reason. I've seen lots of parts changed when this is the problem. Easy to overlook.
Definitely should be on the data pid list on any A/C diag
Thank you!!! Gotta remember that!
I had a 2014 whose AC/heat stopped working. Tried everything I could think of (electric, the compressed whatever it is in the can, etc) until I took out the control module and found that the plug into it had melted.
on older foresters i believe the non auto a/c the connector behind the a/c control head are also an issue if you run it on high all the time and it ends up getting burnt on the connector and possibly control head
Thanks for the video, just in time for summer! 😊
I seem to have the compressor shaft o-ring leaking oil, don't know what to do. Local people say just replace with another one, no one to give it to for repair. 😢
Thanks!
I had two A/C issues I haven't seen anyone discuss before happen in the last couple months on my current project.
Installed the AC system I had lying around for awhile onto my originally non-AC 93 Impreza. Filled the system with dye as well, and ran it a little while... The Compressor seal in the middle of the compressor failed! Nobody talks about that giant O-ring. The front seal failed too, neither of which are easy to find replacement seals for, so I just replaced the whole thing.
Then on the ride home after getting thr A/C system charged properly, the plastic idler pulley failed in such a way the plastic melted and stuck to the crank pulley and compressor pulley too! Had to chip off all the hardened plastic and also upgraded to a metal idler pulley and metal bracket to be safe.
I think that managed to damage the new compressor though, it makes a ton of rattle-y noise now :(
Not sure what lessons I learned other than "Anything that can happen, will happen" LOL
My 2004 llbean's AC button stopped working, doesn't send signal power to the relay. Have confirmed this is the issue several different ways, debating whether to fix it. It blew cold air through my road tripping last year which was great, impressed the system held up as it did.
I fixed my A/C clutch last year super easy
Could you find a replacement clutch. I had to replace the entire compressor.
2011 Forester, 240,00 miles, no AC, added dye to the system, couldn't find any leaks because it was leaking at the evaporator under the dash. Shop wanted $900 to replace so I did it myself, wasn't hard, took me about 2 to 3 hrs and cost with parts and recharge was under $200.
The cool sooo-BAR-ooooo. Wow
2023 Subaru Impreza. A/C is a bit weak for a new car and compressor is noisy when it kicks on. Heater works like a charm.
I had an 07 Outback that finally died in a crash at 230k miles. Never had to touch the A/C once. Was still working great on the day it died.
AC compressor relay:
- Common for the OEM part with age to heat up and fail.
- Symptoms: It presents as solid AC working well for the first several minutes and then just stopping, with it working again next time you drive the car, just to repeat the issue.
- Quick diagnostic: with the AC switched on but in it's failed state, remove the relay and bridge the outputs. If clutch engages again, it is likely the relay.
- Remedy. Replace with new relay; Many aftermarket ones like Narva do an excellent job.
I bought a 2017 WRX with 26k miles and the AC compressor was already bad. I bought a used compressor from eBay for $60, had my system drained at a quick lube place for $30, installed the used compressor myself, and then had the dealership refill/lube/balance the system for $90. $180 and like 3 hours of my time to fix a dead compressor, and after that it would blow so cold it would chase me out of the car lol.
How TF do you balance the system lol
On my tribeca, the drain hose at the very tip was clogged (there is a plastic ring inside the hose that narrows the diameter of the hose) 0.5 liters of water came out)) It’s good that it didn’t spill onto the passenger floor
Do you recommend running the AC system all year and not just in the summer?
I’d love to see a evaporator core replacement 😂
That sounds like fun 😂
some subbys its fairly straight forward. you don't have to tear the dashboard all apart like on most cars made these days.
@@1heavyelement I’ve never done one on a Subaru.. ripping the dash apart on some vehicles isn’t fun at all.. usually when it’s crazy hot.
Ive seen a video for it. Its a 4-6 hour repair.
On the noise of the clutch on the FA engines, would this explain a loud grinding sound on a cold start? I have the FA-20 (2015 WRX), and on a cold start there will often be a fairly loud grinding sound when the A/C clutch engages the first time. It's fairly short, and it will only happen on the first cold start of the day. If I drive to work and park for an 8 hour shift, starting the car to drive home the noise does not return until the next morning.
Mr. Subaru, where do you get your AC compressors from? After having bought what I thought were new compressors on other vehicles only to find out it was a re-manufactured, I'm always hesitant when buying compressors.
what size o-rings? How many needed? 2 Schroder valves + 2 top hose fittings?
I have a question I was looking at my engine bay on my AC line I noticed in your video you have that greenish cap does that prevent the AC from leaking or just keep it pressurized I just looked on my Subaru noticing it's missing
If i had the AC recharged at the delearship, but the AC still only works when moving (i think fans not kicking on when stopped) and mind you its very cold when moving, but just blows hot air when stopped....Is there any reason to let the dealer replace the evaporator? Or is there any easier fix? Fuse or relay maybe?
Would this apply to the 2103 scion FRS brz?
How do you get the cover plate off the newer compressors to attack those shims? 2015 OB 2.5
thanks for the video. i'm a long time tech (42 years) i'm a subaru express lead in charge of 5 guys in southern GA.i'll definitely have them watch that high side line when they change batteries out. is it feasible to put a screen across the lower grill to maybe slow down the damage of the condenser? my concern would be restricting airflow across the condenser. i have an 18 forester and my wife drives 100 miles round trip to and from work every day. i've already replaced the compressor evaporator and condenser last summer when the compressor grenaded. i'm just thinking if it would be a good idea to add some more protection to it. thanks for any input you have on this.
A piece of fine mesh, like screen door material, would likely work.
@@MrSubaru1387 thanks that's exactly what i was thinking.
Mr. Subaru have you seen any difference between R134a and 1234YF? I got 2017 forester xt with 1234yf and i have to do ac-maintenance every two years. It passes underpressure test, but still system is leaking.
I recently replaced the o-rings in the high and low and pulled a vacuum and recharged the ac system. I noticed when removing the manifold gauge that the high pressure side was hot to touch. Is this normal? This was my first time using rhe manifold gauges
I cannot find the link to the videos your mentioned in this video.
Nothing in description too
2008 Forester here, my AC works great but my engine shakes/vibrates when the AC is on. any ideas?
Does anyone know what the hole to the right of the oil filter is for?
Common to have issues w/ AC with a Subaru with only 1,475miles. , just leasesd a 2024 forester limited and blowing hot air after not working, then working, now back to not working .?
hi i keep getting a crank shaft position sensor error code on my 05 Bp5 .. I have changed it twice but a day later it comes back . i recently did an ECU reset by draining the power ( disconnecting the battery and tying the two terminals together for about 15 minutes) . the code cleared but came back. i had an electricals guy test the wires and we found no faults but the code still persists. (P0335)
Reminds me of Chevy's 😂, at least it's easier to work on them. 🤣
I bought 24 wrx vb 11ks on clock drive home about 10km driving easy,,,pulled um in driveway turned off,,,and all off a sudden alot of smoke came from under the hood,,,rezalet said was normal but I'm still concerned,,,any help would be appreciated thank you
2012 forester AC blows warm air on drivers side and cold air
on passengers side, why?
So when the Subaru dealer tells me I need a new AC compressor, do I trust them Or is it typical stealership BS? 02 bugeye wagon
On one of your past videos you had mentioned EGR valves and how to replace them. On my recent service of my 2020 Impreza I asked the service advisor what would the charge be to replace it and he stated at least $ 400. as shop rates are $ 200 an hour ????? I try to be proactive on anything the car needs and at 80K I figured go ahead and replace it even as the car runs fine. Question is $ 400.+ too much for this job as I thought it took maybe 45 minutes to do ??
If it’s working don’t touch it. However, it’s not that bad of a job and if you have the right tools you could remove it without pulling the manifold.
Personally, I’d take off the manifold and while it’s off, I’d do a de-carb cleaning of the intake valves.
@@arthurfernandes2402 I will continue to drive until I note any problems in performance. Thanks
dealing with a 2016 forester losing signal to compressor fully charged no leak new relay new pressure sensor
My 2017 legacy Has had abysmal ac from day one. It was really disappointing, But if it's that hot, I'll just drive my truck with 10/10 AC
I had a 2016 and 2019 and the only issue I had was that they were slow to actually cool, but once it actually cooled, it stayed pretty chilly. I will, say the 2019 was a hair better.
My motto: You can never have enough pens in your pocket.
My 11wrx has all new parts except the evaporator behind dash. Still gets very cold in vents according to thermometer but the fan doesn't seem to be enough to push it out. Wish a high output fan existed
Check your cabin filter
@@shanestrains2849 its been swapped with a high flow and none. Didnt help
@@DustinDIY Make sure they didnt wire it backwards 😁 That sucks man, I've never really diagnosed a subie with low airflow, never seen it
@@shanestrains2849 it isnt wired backwards but i do think it has issues. The connector definitely has signs of surges. But high flow seems right. Every other setting is very low. So since high flow may not be good enough. Why spend money on another blower?
@@DustinDIY It sounds like you have a voltage drop on either the power or ground side whichever way it's controlled. I just fixed a ford e350 where low, med, medhigh was the same and high was just a little better, found a twist tape connection behind the blower switch that had corroded enough to still pass current but was pretty much green crusties all the way through the wire
Hey Mr subaru. I am having an issue with extremely poor gas mileage on my 2014 legacy 2.5i. So far I have checked the air filter, replaced spark plugs, cleaned throttle body (which helped my idle issues significantly), and I have new tires all the way around (I needed those anyway). I should get 26 city, 30 highway, I get 18.3 average with a mix of city and highway driving. Any other suggestions on what I can try? I put royal purple max restore in my last tank of gas and it didn't really help.
Hopefully Mr Subaru will chime in but have you looked at the timing? Has the timing belt been changed recently? If the idler is weak the belt may have jumped a tooth.
My 08 Outback AC compressor clutch clicks on and off, where do I look first?
Check the Relay!
+👍
I have to wonder about that little hose completely crimped and not connected to its nipple.
My one knock about Subaru, they seem to have weak AC's
Mine will blow cold, then randomly only air will blow, then the cold air will come back... Any help is appreciated
Same with mine..
Mine did that until I replaced the relay.
Which relay?@@ScotClose
@@malkeyatsingh4312 AC relay.
......... or you can just roll the windows down.
what a coincidence you made this when you did, i have a 2018 forester and the ac clutch squeels like all hell, i was worries i was gonna blow my ac and seenpeople online saying it could send debris into other parts causing more damage, does that sound fair or should I just let the ac squeel and hope it lasts as long as possible? @MrSubaru1387