How To Fix Car AC That Blows Hot - Possible Causes

[@ucfalumi94]

2016 Impala - After taking it to Chevy for diagnosis, they said it was short in the compressor and $2300 to fix. I didn't buy it. Air was blowing hot at red lights non stop. Eventually was toggling ac on and off for about a month to get it to kick on. After watching this video, I fixed the problem. I didn't have a matching AC Relay to swap so I took out the relay and put it back in. I still can't believe it, but I've had no issues since I did that. Going on 4 days now. THANK YOU!!!!

[@TonyTruth-s9z]

Sounds like a Friday estimate. Likely less on Monday.

[@QuantumMechanic_88]

I used an aerosol spray for cleaning electronics . It can clean contacts and evaporates super fast. Alson used for electric window switches.

[@marciejones4966]

Wow! This is the best diagnostic video i have seen in forever! You are so thorough, concise and informative. I went to college for auto tech back in the “olden days”… i hope you are an instructor. Fantastic skills. Thank you for sharing them!

[@rayfultz3286]

And that was detailed bud. Seeing that I am a professional mechanic, licensed and ASE certified. You covered so many things👍👍 Awesome 👏

[@yucelypinzon3658]

On the chevy cruze the fuse thing is labeled different and they are smaller, we swapped the "AC Clutch fuse" with "horn" to test and it immediately worked. Thanks to this video we knew what to do. We bought new ones for $4.99 - cheap fix. Thanks a lot! With this super hot summer we are great full for your video.

[@proclaimliberty2000]

👍😊 That’s great!

[@RizoSupernova]

This has got to be the best AC diagnostics video on youtube. Thank you.

[@tomassoyweyvon4902]

A/C Problems, No Worries, "Better Call Paul".........Fantastic tutorial !!

[@Rhifan01]

Did I find this helpful? Really?? Sir, this is a Masterclass in auto a/c diagnosis! The first video anybody should watch. Thank you!! 👏 👏 👏 🙏 🙏 🙏

[@chrisbyway3087]

This was an excellent video on A/C trouble shooting. One of the best I have ever watched.

[@Rodeormar-kv3se]

You sir are a fountain of knowledge on automotive AC. Greetings from Colombia...

[@rachaelb9164]

This was the most thorough easy to understand explanation of how the system works for us non mechanics. Thank you.

[@skipponticello1586]

747

[@mitchbogart8094]

Wow! I am a degree'd electrical engineer who started with electronics over 65 years ago when I was 7. I know a bit about mechanical systems, too. About a month after a front end collision my car AC had this same symptoms, no hot air and no clacking sound, which I assumed (and hoped was a relay), even after a recharge. I was ready to start testing the compressor for voltage, and decided to check KZbin for any advice first. Wow, again! I have all the electrical test equipment of course, but needed exactly all the information in this thorough, and well, best ever, video! Thank you for totally enhancing the checks I can now do, including clutch spin tests, sensor tests, and an OBDII test. Also for putting them in such an experienced based logical order. Instant subscriber!

[@madpeppermcginiss373]

Love that you explain things simply and clearly! Thank you for not wasting my time and getting to the point! Definitely will be following and suggesting you!!

[@kenlemmond673]

This is the most amazing and thorough explanation of auto A/C I have encountered on KZbin! I'm going to use it this morning to diagnose my niece's A/C blowing hot all of a sudden. I'm already excited to check the relay! 1000 thanks!

[@richardbizzoco624]

Couldn't be explained more clearly than any video I have ever seen on AC. Wow great job.

[@allaroundtown]

Most informative AC trouble shooting video I've ever watched. Thank you for such a concise and easy to understand process.

[@nanakenbrown1881]

Hello please I need your help

[@freeamerican2313]

I'm so glade that I came cross your channel. Your video was the only one that fully explains a complete diagnosis correctly.. Thank you for sharing

[@bigtimes101]

By far the best trouble-shooting video for the AC I've seen. Very well done and easy explained. Lots to check instead of assuming you need more coolant....

[@proclaimliberty2000]

👍😊

[@cathyrenick8562]

@@proclaimliberty2000; Why would my Honda ridgeline have hot ac on drivers side and cold on passenger side? What settings need to be set?

[@MrJess-el8ku]

​@@cathyrenick8562 Most likely not enough ac coolant gas. And needs a refill.

[@okcowrancher]

This was an excellent video on A/C trouble shooting. One of the best I have ever watched. The video was clear and the sound was great. Very professional. Thank you so very much.

[@janetotovic1442]

After spending several thousand dollars on an expansion valve, compressor and voltage regulator, it turned out to be only my ac relay! Wish i saw your video before i let a couple service guys take my money! Thank you!

[@teresamanning5849]

Thank you for starting out teaching, teaching exactly what your video title said and the precise and visual manner in what you taught. I actually learned a lot today!

[@TStheDeplorable]

It was 104 degrees at noon when my neighbor asked me to look at his non-functioning a/c. He's an old retired pastor and needed to drive a long way later that day. I was sure I wouldn't be able to fix it for him that day, but I took a look at it. As sweat rolled off me I lost track of what I was testing, but somehow I concluded it was just the relay for the compressor clutch. It's awesome to feel like the hero once in a while!

[@proclaimliberty2000]

@@TStheDeplorable God bless you for helping that Pastor!

[@gemgem5548]

So why did my friend do this & IT WAS THE ISSUE.... The relay. That probably saved me THOUSANDS from going to Acura. THANKS!!!

[@gohan9638]

? Saved your friend or you?

[@traylorgang]

Super man ain't saving shit

[@topher8634]

Very common problem with Hondas and Acuras. They are always in stock at your local Jap Trap dealers.

[@chelseafuller8412]

Mine too! But I got the new piece and it didn’t work so we had to tape my old one to keep the fan on all the time. So I have to unplug it when not driving it 😂 🤦‍♀️ but apparently it’s a sensor not relaying the message to this relay

[@NORBERTODSLEGASPI70]

,,, ok

[@helenwingeier]

Very informative for a woman! Explained everything clearly and directly to the point!

[@SarahClayton-xs8gm]

For a woman?? It’s a great video for any gender. 🤨

[@photondebuger45]

Mmm when you were checking the voltage at the connector you left the clip on the positive side of the battery so you were checking ground not voltage. That's still fine actually because you also have to check ground too as well as battery voltage. Repeat the same thing tho just take the lead and put it to the negative side. You won't get voltage right away that's fine you would turn on the car and everything along with AC to get voltage that way. The safest way would be a bi-directional scanner that can turn the clutch on then do the test. I use a test light on ground it's easier for me that way. Still great video on AC it's nice to see a video that can help people with this topic ac is nice in your car especially when it's like 105 out and also humid. Like where I live and seeing the comments this vid is doing wonders for everyone. Hope it racks like all the views x3.

[@jamesperrigin4539]

I appreciate your videos, you do a great job of actually showing exactly what your doing at the time along with whatever part you are working on!!!! Great job!! Hope to see more of your videos in the future, thanks!!!!

[@marioalejandro7549]

It was the magnet clutch relay!!!!! You saved me a lot of money 🙏🙏🙏🙏👍👍👍👍

[@larryloyd2989]

You're spot-on brother you help me out majorly I just found out what was wrong with my AC and it's the fan relays both my fans aren't working and I jiggled one of the relays around and one of the fans cut on so now and I know that is the issue. Thank you so much you could have just saved me hundreds of dollars. 😁👍👍

[@proclaimliberty2000]

I’m glad I could help you Larry

[@gregoryluna535]

Inspired by the video to poke around my AC that stopped blowing cold, I changed the A/CON fuse with a spare in the box and it seems to be working now. I wonder what the dealer bill would have been. Thanks!

[@fredparsons5134]

One of the best in depth videos I've watched on KZbin. Thanks for all the important information.

[@peterfoxwell5198]

I learned some great tricks from video. I'm going to go to the local rental lift and check it out from underneath the car and see how many I could do before I take it to mechanic

[@charliejohnson5630]

Sir thank you for this extremely detailed tutorial! By far the best video out there

[@luke_8_17]

Best video on KZbin for AC issues. Thank you so much. 😊😊😊😊

[@noinimod]

Tremendously helpful video. Appreciate the level of detail, attention, generosity and love that was put into this!

[@BrianTillman-og2ut]

Ll lol l

[@haddenvladamiriii7137]

EXCELLENT INFO this is one of the best how to videos I have ever seen lots of detailed troubleshooting included with reasons causing the issues and fixing keep up the great videos now off too fix my 2018 Dodge Grand Caravan gt supercharged air conditioning system

[@nice2000000]

Completely agree with few before I readers - VERY clear A/C problem explanation, even for a climate controlled vehicles. THANK YOU.

[@partylee007]

Yep, it happened to me on my 2002 Camry. It was a $2.50 relay. Luckily there were YT videos like this to show me to check it.

[@fredericocorrea9814]

Great video. Really well explained and very comprehensive. The only thing I would like to have seen is the solution to having too much refrigerant without just letting it spray out. I'm concerned that the car I just bought has this problem

[@bizzirker]

Excellent. I was able to figure out my problem from this video, it was the speed sensor and it was too low on refrigerant, due to a leak on the compressor. Thx

[@BryanChance]

Priceless video! All you need to trouble shoot the AC system. Thank you!

[@proclaimliberty2000]

👍😊

[@dianeruiz0721]

Hi I’m Diane I just found your channel. You’re an excellent teacher!! you explain everything clearly and you’re very knowledgeable. I subscribed to your channel and I thank you very much for your help. God bless you.

[@nathanielezemandu9581]

My AC just stopped cooling two days ago. Based on your advice, I checked and the two fans behind the Radiator aren't working!

[@TomWayed]

I really appreciate all the demonstrations that you did by showing step by step what to do where to locate and what to expect your video is one of the first video that I have seen that actually educates and explains all the steps carefully God bless you thank you for your knowledge

[@steelejimar]

By far best video I have ever watched covering a subject . Everything explained in language anyone can understand ,also very well shot

[@gen5011]

The best I have seen in an educational, diagnostics video. Thanks.

[@stickiestfingers2155]

With the hotter temperatures coming, this is very helpful!

[@sclm55]

Wow...wonderful. So far, this is the best most detailed and clear breakdown and explanation on the subject (troubleshooting AC issues) I've come across. Thank you.

[@FundingSecured]

Very clear, concise, informative, and very helpful explanation of AC system troubleshooting. Thank you!

[@proclaimliberty2000]

👍😊

[@connieworcester55]

Awesome detailed video.!! I wish I could figure out where to begin with trouble shooting my AC. I just bought a 2010 Lexus RX 350. A/C does not work. took it to a local garage, the evacced tested and recharged the system. still no AC.. they attached their "scan thing" and they were able to get the compressor to kick on and blow ice cold AC. while it was connected. but no AC without it connected.. could it be a communication problem with the car computer? or could it be a sensor ? I hate to bring it to a megabuck lexus dealer.

[@Stephanie-lb6tt]

Although that was a foreign language to me, you just spoke, I appreciate the fact that you share this valuable information! God bless!❤

[@joecephus4151]

Great video, but no mention of a repeatedly blowing fuse, which sends power from relay to compressor. This is a common problem, usually caused by a short in the clutch, and should be one of the first things checked.

[@veng9824]

Repeatedly blown fuses are due to magnetic coil behind the clutch is short. Clutch not engaged sometime due to magnetic coil is broken open - using ohmeter sound continuity connected to ground and magnetic coil wire to hear a beeping sounds proving it is good.

[@veng9824]

Short not in the clutch- short is in the magnetic coil behind the clutch which is just a springplate.

[@ItsJustMona_Texas]

This guy is awesome! I’ve been following and watching since he had 40k followers

[@hughessystemconsulta]

Best video I have seen for air-conditioning diagnostic!

[@aznative_]

That was a really thorough video I can't believe how much you covered in such a short amount of time. Thanks

[@aunttriciaattic]

Thank you for all of this information.I have a Ford focus at work I smell something burning. What could be?

[@zest4life792]

Dude, Rock out Loud. The best ac video, I have seen. Thankyou

[@macfady2181]

Awesome video buddy, great job, you can tell a lot of time and thought went into it. The voiceover and graphics turned out really well (simple is better), were straight to the point, and followed a logical sequence.

[@proclaimliberty2000]

👍😃

[@sarahsmile8051]

​@@proclaimliberty2000hi, I have a question but I can't comment? That's why I'm on the reply, I told a mech is was blowing got, they checked and said my compressor is shot. Will any of these work? Should I get a 2nd opinion?

[@jenniferwilber1654]

Expertly explained! Thank you so much. This has been the single most helpful video I’ve found on here regarding car repair at home. Really appreciate this 💛

[@tammytrew7256]

I have an 04 Acura TSX and I love how much you go over every possible part! I am hoping my issue si one of the pressure switches and not my clutch &/or compressor because it is seriously expensive in this car.

[@markbutterfield5559]

Now that's a compliment.

[@mr1motime35]

most complete AC video on youtube. Thanks.

[@Taino871]

Thank you very much, I did not repair the A/C but I did find out the clutch is bad, I’m replacing the entire thing.

[@BeautifulBeing3369]

Graditude to you Sir for using your precious time to inform & help others 🙏🏽Peace & Blessings to you ✨

[@thomasflynn6307]

That was the best video I’ve ever seen on troubleshooting any kind of electrical system I guess I’ll just drive with the windows down till October lol

[@khengratha3264]

Fantastic demonstration! clear explanation and straight to the point.

[@ceetwyce335]

My friend! Man you don't know how bad I needed to see this video AND on this very Camry. (I see yours is 2005-2006 with the 2.4; I have a 2004, same engine, same color.) Thank you, thank you, THANK YOU!!! 😊 👍🏿

[@victorramosjr2445]

I really hope your video is my saving grace and that the evaporator temp sensor is the problem on my 99 Silverado. My ac will blowva bit cold for some time, then start blowing warm or hot. I'll turn it off for like 5 to 10 minutes & it will start blowing cool, sometimes a bit cold. Ive replaced the low pressure sensor multiple times and it will do the same thing. So it Doesn't appear to be the low press switch Thanks for the video. Its the most detailed video ive found so far.

[@proclaimliberty2000]

@@victorramosjr2445 My best guess is there is not enough refrigerant or too much refrigerant in the system, or it has a faulty expansion valve or orifice tube depending on which one your vehicle has. It is aways best to add refrigerant by weight because then you know you have the correct amount. I have a video in my playlist showing how to do that and how to replace an expansion valve.

[@deonerasmus5629]

Thanks,one of the best descripive ,to the point ,video I have seen

[@margietaylorthomas8408]

I absolutely love this video...Most mechanics often take advantage of women when we bring our vehicles in for service.Thank you so much.

[@markbutterfield5559]

I really like your show. You are better than that Scotty Kilmore. He talks loud and doesn't give 100% of some info.

[@tonymetro4707]

Your a 🐴

[@Mickey-jo1hf]

Excellent informative video. Thanks so much!💖 from a gal that does as much of her own repairs as possible.

[@tonydivitto9113]

One of the best info videos ive seen in a long while thank you

[@mnyee1995]

Best informational video for car AC system. Thank you so much.

[@firdausravindar977]

Thank you for posting this valuable video on KZbin. Got a question, how to know if the compressor is losing its ability to compress the gas? Any test for that?

[@Count_Nobula]

Bravo good sir! This is the single most well explained, and informative, youtube video I've ever seen. Thanks be to ye

[@stephenedwards5427]

FIXED...thanks so much, you're a legend!👍👍

[@Aptitude786]

Amazing, very clear and informative video. THANK YOU.

[@cherylinoklahoma9624]

Paul, thank you so much. I really enjoy your videos and always learn something useful. This one is so informative and detailed it is a wealth of information. Thank you! Hugs to Sparky and you!

[@proclaimliberty2000]

👍😊 You’re so welcome Cheryl from Oklahoma. The whole reason I started this channel was to try and help people. God bless you!

[@Eissej07]

Boxing 2020

[@eddieroman3629]

you are the best tech i experienced self encouraging help by far easy concise explanation in using the multi meter and diagnose all the probable cause and excellent video and sound, thank you so much for your time and care in processing this video. may God bless you and your family.

[@willytangkere5784]

This the most detailed explanation in KZbin ,

[@Israfil-RF]

Hello there, Thanks for sharing your great knowledge. It is a very nice and detailed explanations of the AC problem. God bless you too! Take care of yourself brother.

[@proclaimliberty2000]

👍😊

[@rolo_pabbs]

Good informative video. Thank you for sharing. Have a 96 960 Volvo, hot air blowing on my feet. Fan doesn’t turn . Any ideas?

[@christianmorgan6588]

Amazing explanation but you just absolutely demolished what I was hoping for a simple fix

[@albertburrows8146]

Hi thanks for very good presentation. Any ideas on what my problem is with? My 2015 Hyundai Santa fe AC start and stop cold and hot air while driving. Thanks for any help.

[@bornoflove]

Have you tried anything from the video?

[@karlmaxweber]

First of all, I appreciate your tremendous effort to provide detailed information about AC systems. This may be the best video about AC diagnoses. I have a question, my air conditioner is not blowing cold air. About 10 minutes after the vehicle is started, it drops just a few degrees below the outside temperature. After checking the compressor side, I noticed that after the engine started, my compressor clutch began to spin. The clutch continues to rotate even if the AC is off. It doesn't matter if the AC is ON or OFF, if the motor starts it will start spinning. I haven't seen a magnetic clutch either. I could not detect any magnetic reaction in the clutch. I decided to replace the clutch. Not sure if it fixed the problem or not. What is your suggestion for the problem? Which part should I focus on in these circumstances?

[@johnny8583]

Did you ever fix it? My Compressor and Clutch automatically turn on and spin when my car is on too.

[@ahmettopbas6660]

Dear Friend. Thank you very much for the video and the lecture. My car w205 c200d Mercedes 2015 model air conditioner suddenly goes into heat after a while of cold. Doing it 3 or 4 times a day. When I first run it, it blows 10 miles of cold suddenly goes into the heat. After a while again blows cold. What is the reason. I'd be glad if you could help.

[@proclaimliberty2000]

Your expansion valve could be failing.

[@ahmettopbas6660]

@@proclaimliberty2000 Thank you so much for your attention. Last year, the pressure sensor changed and the fuse box update was made. It was connected to the computer in the service until this week it did not fail a year, 172 times the pressure sensor failure has given. Why does not even find the service that gave this malfunction.

[@ahmettopbas6660]

@@proclaimliberty2000 Thank you so much for your attention. Last year, the pressure sensor changed and the fuse box update was made. It was connected to the computer in the service until this week it did not fail a year, 172 times the pressure sensor failure has given. Why does not even find the service that gave this malfunction.

[@ecast1500]

great information, if I tried any of these tips I know I would break even more things,

[@freerangegirl4457]

You are a natural born teacher.

[@dodo13500]

Awesome check list! I wonder what the most common problem is? Guess I'll start at the clutch.

[@nathanthomas6312]

great video however i have a question. what would make my compressor to stay on and still blow hot air? i initially thought it qas low on freon but the pressure was reading that it was overfilled. so i let some out until it was in the green. and it still blows hot. what do you think might be the problem?

[@ggusewelle9682]

Mine says Freon level is good, but still blows hot air. Wish someone had an answer! These 100+ degree days are not fun!

[@bornoflove]

Have you fixed it yet?

[@sunshine3914]

@@ggusewelle9682 Could be the actuator. Not sure if he went over that or not ( didn’t watch the entire video ), but you get to it through the dash panel or, in my case, behind the glove box. Could have replaced it for $80, but my neighbor just bent a wire to wedge it close, & used some gasket sealer to secure it.

[@Lonman2]

Does this apply to hybrids too? (Prius to be exact)

[@back40bandit98]

-- Thank you for the info. Will be trying all these ideas on my 2007 Honda Civic. It's blowing hot air.

[@codyhowe1059]

Did you ever fix it? Same car and I’m about to try to fix it

[@jameshenderson7452]

Absolutely great video. Thank you and God Bless!

[@argentinonazarenomedina6372]

Eres muy bueno, gracias por compartir tu sabiduría. Abrazos desde Buenos Aires Argentina

[@Michael-ol9zn]

BEST VID on this subject I've found!👍👍

[@dennisteagueCV41]

Thank you very much for these tips on diagnosing the AC System. Can you please let us know which Lead Set you are using ? I cannot find those online or in my local stores. Alligator Clips on one end, and Probe Pins on the other end ! I'd love to get some of those.

[@dansolo9978]

I'm pretty Sure that I've seen Those on - Amazon or Fleabay.!? As a [ Multi Meter Test Lead Set ] You mean Something like This... This Link Should Work if You're in the UK, Good Luck there's Load's to choose from also :- www.ebay.co.uk/itm/373606424299?hash=item56fcad9eeb:g:pvwAAOSwUsVgvfL2

[@dennisteagueCV41]

@@dansolo9978 ty I found some at a Harbor Freight Store near me

[@dansolo9978]

@@dennisteagueCV41 Oh well I’m glad you got some anyway…

[@hoodtac8689]

by far the best ac video ive found today, thankyou

[@scottheller1379]

Same here. Best a/c diagnostics vid I've seen

[@proclaimliberty2000]

👍😊

[@ljjl6458]

Amazing, Wow Thank you my brother in Christ Jesus this was so helpful. When something breaks I do love to try to fix it myself what am I going to do a break it. If it's already broken I know but definitely when you follow all these techniques and things to check like you did here Thank you so much and God bless

[@amberwier4382]

Thank you want to watch all your videos. I never comment but this we need more of!!!

[@jmirush3200]

What an awesome tutorial! Best I’ve ever seen!

[@aNuthaRedneck]

Great troubleshooting. I'm a good mechanic but know very little about AC. My 2006 h3 hummer would blow hot on driver's side if temperature was set to anything but its lowest setting. Now it doesn't get cold period. I put a gauge on the low side. Either running or engine off I'm getting 90 psi. Please tell me its just a fuse or simple switch somewhere...

[@mrscorpio007ify]

Great video! So when my Auto stop feature on my car does not work at all for months (Says: Charging System warming up) but never actually works (battery test like new) what is the problem. At the dealer they said to turn the ac on, put the windows down to see if this fixes the issue.