AUTOMOTIVE HOW TO: A/C SYSTEM DIAGNOSIS FOR BEGINNERS

[@MailmanWilly79]

As the owner of a 20+ year old car who likes to do his own repairs, this explination is PRICELESS! The more things I repair successfully, the more confidence I get! This video provided me with information that will no doubt help me when my system needs some tlc.

[@dougkelley1266]

As an advanced diy. This is by far the best explanation of an ac system i have seen. Awesome information.

[@ahmedfarooq9687]

Excellent Demonstration Thanks

[@erikb8140]

Love learning anything about cars, dream is to own a shop one day. People like this guy who willingly teach, the best people ever to support.

[@GarryGraves]

If you made a whole learning series like this, I would openly pay for it. No BS, better than tech school lol

[@RustbeltMechanic]

Thanks man! What areas would you like to see more/first? EVAP systems? Diesel After treatment systems? Basic electrical diag?

[@willcontreras2021]

@@RustbeltMechanic basic electrical

[@juanpaz6707]

Do more a/c material and electrical diagnosis. This video has a lot of good information.

[@topezrosser2759]

Evap systems please

[@levthelion]

@@RustbeltMechanic GarryGraves went MIA once the questions started rolling in.

[@corvettekiller96]

Been a gear head all my life and im a licensed stationary steam engineer....you just explained thermodynamics and dianostic examination better than a 5 thousand dollar class lol. Very good job man. You should consider teaching.

[@rubenleyva-jmenez9433]

I’ve seen plenty of A/C videos and this one is by far the best one, you explain everything really well, keep up the good work.

[@RustbeltMechanic]

Thanks! Appreciate the kind words

[@godefroidlufu344]

I'm an electrical engineer and I do some work on my cars myself and I asked my aircon specialist friend to explain to me how to DIY it but I couldn't understand a thing on what was saying. But this guy explained the basics on such a scale that everything is so clear than it ever been. Really thumbs up.

[@jettrink7510]

Thank you for your speaking loudly and clearly... so many people these days just mumble. good video

[@scoobywrx05dw]

One of the best explained walk through ac videos I've ever seen. Fantastic job.

[@gunnerjaxen5651]

Instablaster.

[@bernardodelacruz4827]

Nice bro fully clear explanation about ac thanks 😆✌️👍

[@MyVids2Share]

I agree

[@gregbowman3151]

@@bernardodelacruz4827 55ddd

[@akth5355]

im impressed with this diagnosis

[@joeytongue3982]

This gentleman did a great job on this video. If I owned a auto shop, I would require my techs to watch this. Very well done.

[@KuudoPrince]

Wow as someone who knows nothing on A/C your explanation just made me feel like i can do it myself....wow very good, simple and informative

[@ephraim.1964]

This guy knows his stuff. Hands down the best KZbin video I have seen regarding auto AC troubleshooting.🙌🙌👏👏👊

[@norml2464]

This is the best explanation I have seen on basic vehicle ac systems. Love the diagram reference with the pressure readings

[@Pontiacdreams]

This is the gold standard as far as I’m concerned. Couldn’t be clearer. THANK YOU!!

[@cztexas]

This is the best video on how the car air-conditioning system works! Thank you so much for this.

[@pontiacsrule8761]

That was an excellent video on AC systems. Very well explained. I like the fact when he keeps saying you don't need a $4K machine to do this king of work.. So many other videos say never be a DIY & do this kind of work. This just isn't true & he proved this. Thanks for making this very informative video..

[@vegasheat71]

Excellent video! This is the first time someone has explained some of the basics that can cause symptoms that I have had in most of my vehicles. I wouldn't mind a 3 hour video to understand every symptom and how to repair it completely.

[@JingsWorld]

I can listen all day and willing to learn the basics of AC systems. I’m a Journeyman Wireman for 30 yrs but AC is totally different.Thanks and I’m a new subscriber now.

[@bills7996]

Excellent video that allows the novice and the back yard mechanic to understand AC components and exact problem and repair. Nicely done.

[@maxcrss2845]

Thanks for this. I took my car in to a mechanic to see why my AC wasn’t working, and it turns out my entire system had corroded. I didn’t understand what that meant, but this video really helped me visualize it and look into what parts I might be able to replace for a stopgap

[@dd___dc]

Yea, it's mean you had a big hole somewhere

[@outofthinair1]

The best explanation I've seen on KZbin. I'm now going to troubleshoot my AC system with confidence thank you.

[@66meikou]

I'm not a diy'r as cars are too complex these days but you gave me enough info that I can if the repair place is trying to roll me over.. Thank you very much!

[@tonyreyes9969]

One of the best explanations on how the car air-conditioning system works. Thank you so very much for sharing your expertise. I really enjoyed watching the whole video. All the best and best regards.

[@kenlemmond673]

Excellent video! So glad I watched it. I have an 06 CRV with a new compressor replaced last year. During the summer it was cooling so well it would absolutely freeze me. Oddly enough I noticed on a warm day in December it wasn't cooling. I assumed the coolant had leaked out and got one of those DIY kits from WM to put some coolant back in it. To my surprise, when I hooked up the hose to the low side, I got high pressure in the red range on the gauge. Now, I at least have a clue as to why the low-pressure side is high. I did not have the expansion valve replaced when I had the new compressor installed! What seemed like sorcery and rocket science before now kinda makes sense! I'm going to my guy and have the expansion valve replaced. A/C starting to make sense. This is scary, but fun! 1000 thanks for a great video!!!

[@50commas40]

i have alot of knowledge about cars, i must say, the way you explain this is incredible.

[@patrickkoloko9028]

before I didn't know where we took the reading of high and low pression. you really have a good explanation skills.

[@TheLaborService]

Thanks man! this helped me diagnose a bad wire that was intermittently turning off the fan. I noticed the high pressure would increase all the way beyond 300 as I filled in freon, even with 4 oz in the system. I thought it was a clog or something, thought the expansion valve was bad. If I just knew a little foundation to the AC system I would of known instantly the fan wasn't cooling the condenser, duh!. Thank you!

[@paulmaxwell8851]

A very thorough, very education explanation! I think I learned enough to go ahead and tackle my wife's under-performing air conditioner. Thank you!

[@pro-lifik]

By far the best and most in depth explanation I've found yet. Thank you so much

[@joeabad5908]

A very good tutorial.. I understand the whole AC system through your clear explanation. Very informative video. Thank you for uploading.

[@pragasamsupiahs8419]

Good video, tutorial on how the Car AC system works.Great for the beginner.Simple and clear explanation.Tqvm and Salute you Sir for sharing the knowledge.🎉 Greetings from Malaysia.

[@fish7400]

I was a GM tech at a dealership like… another lifetime ago lol. Its amazing how much you forget. Great video, spot on info! I’ve always felt that techs should be pro’s at the basics before giving them the fancy tools. I was relegated to gauges until I earned my salt enough to use the snap-on machine that did everything for you.

[@automedic9781]

PLEASE do this with other systems of the car, fantastic series, even for the experienced tech

[@RustbeltMechanic]

Thanks! Appreciate the feedback!

[@oraciorobles3328]

Thank you for not making a 2 hour video👏🏽 I learned a lot 😊

[@PaulMajephat]

That's a full one week course compressed into 30mins, good job mate!👌

[@thereckchanic4709]

One of the best educational car a/c videos on the tube . That schematic demonstration was way cool man.

[@devin30thirty]

One of the most complete AC tutorials I have seen. Love it! Would like to see a proper vacuum and recharge session. Awesome job!!

[@mkole3262]

This is the best explanation I have ever seen. Great job!

[@Vramirez6582]

Man! Seeing this video helped me catch an issue the easiest way I could learn. Thank you!

[@chaanakahmataza5358]

I've been in school for 2 years and this was the best info yet

[@RustbeltMechanic]

Thanks! I appreciate the support👍🏻

[@lrebelo100]

Good job explaining any common AC system problems. You have a new subscriber.

[@romansandacz]

Dude this is awesome I would love to see more on this and more like it

[@RustbeltMechanic]

Thanks man!

[@randyulmer7319]

@@RustbeltMechanic you it

[@john.french]

So much good information on this video! Especially why a vacuum is pulled! Never heard the reason why before. Thank you!

[@Titellian]

Very helpful. Thank you! Would also love a followup video with more advanced diagnostics.

[@crystalclear7422]

Thank you for making this useful info video. I’m trying to do some last minute studying before my HVAC auto class ends for finals and for my ASE cert test. I’ve been kinda confused here and there throughout the class about this topic but this was just the refresher I needed. Thank you👍

[@triplefoam]

Really good video sir and your material was spot on. One suggestion would be that once proper condenser fan operation is verified, always place a really good fan in front of the vehicle to replicate air across the condensor while driving when reading and/or adjusting pressures.

[@loganeugenes991]

Damn this guy is great! A/C whisperer! Best explanation I've ever experienced.

[@wadewillson6796]

No doubt this guy is a very good instructer keep up the good work Buddy.

[@RustbeltMechanic]

Thanks! I appreciate the support👍🏻

[@shermant9440]

Interesting video. My ac starts out cool in the morning and as the day warms so does the air coming out the vents. And it stays that way doesn’t fluctuate. First I thought it was my condenser but from what you explained in the video, I’m now thinking expansion valve.

[@chriscodrington5464]

matter of fact, well organized, easy to follow. Nice job!

[@luislibre9616]

Thank you for this detailed introduction, im ready for the 3 hour class.

[@jameshuddy5625]

Nicely done the next junior Tech that asks me about how AC systems work I will definitely refer them to your video

[@hrford8362]

Well done, much more informative than tool box tours and tool reviews!!

[@josevillalobos4241]

The best video on automotive ac diagnosis I've ever seen! Great job! 👍

[@jasondoolin6476]

Using that switch for the relay was next-level.

[@david84077]

The best air conditions for starters I have ever seen...Thank you

[@ericgunter45]

Inexperienced diy ac guys keep me employed. Just this week had a ponitac g6 with complaint of ac not cold, gauge readings were tell tale for an over charge. Hook up the ac machine and recovered 12 ounces more than spec plus 4.5 ounces of oil. Recharged to spec and fired it back up and the compressor was not happy since they oil slugged it. Then when the parts came in I recovered what I had put in and recovered another 1.5 ounce of oil. I dont know how many oil charge cans they put in it but I flushed everything that wasnt replaced and charged it back up and all is well. Expensive lesson for them but nice ticket for me.

[@RustbeltMechanic]

Those are always nice tickets!

[@mikevonkleist6767]

That's hilarious. Me too. AC fix in a can. People don't understand about why this works. I love car HVAC. One of my favorite services that I do for my customers.

[@avery5471]

@@mikevonkleist6767 I went to a dealership and they said they would charge me 2 grand to fix the ac compressor, it needs to flushed and replaced

[@ronmtz2531]

Eric gunter is it possible to recover oil from a system in order to charge to spec?

[@ericgunter45]

@@ronmtz2531 the only way to get it back to 100% correct would be to recovery the refrigerant, then remove and drain the compressor and flush out all of the other components.

[@pablomontoya8879]

Great video easy to follow and understand, would love to see a part 2

[@Batistareparosautomotivos]

Ok

[@Rage-oe5dx]

That was the best class I’ve ever taken thanks professor stay awesome!

[@johnmefford6492]

Excellent job sir, you take your time explaining yet are concise and don't mince your words. Loved the diagrams and walking through the physics of the entire system, I have only seen videos of people talking about and pointing to parts on the vehicle and it's hard to follow along.

[@mariongraham7173]

Buddy ty for taking the time to make this video, I watched it thus far about 4 or 5X. Ironically after I watched it I had Ac diagnostic the next day, high reading on the low side , high side was normal, I went after the exspansion valve, once changed the Ac system was extremely cold. Got the job done like a boss, an grabbed the bag 💰💰ty again.

[@RustbeltMechanic]

Good going man!!

[@celsobantay1211]

You are great instructor Sir, Awesome!!!! Keep up the Excellent work.

[@cennsa140driver]

Good overview. The low pressure moving from a liquid to a gas (phase change) requires a lot of heat which it gets from the warm air making it cold.

[@ShroomDaddy707]

As my a/c instructor loved to say "a/c doesn't make cold air it removes heat cause In the a/c would there's no such thing as cold only lack of heat"

[@thomasmoore8316]

this video is by far the best diy video and explained perfect.

[@chuckwhitney3691]

Very informative great explanation you make it very simple to understand

[@Born2RiffRock]

That was excellent. Love you see you explain all that but with the switches and sensors. That was not all these odds and ins to check ..great video.

[@OuterSpaceHoppa]

Great video! After vacuum, does my system require me to inject the full volume of oil stated in the specification? Or will some oil remain in the system? How will I know how much oil remains in the system after vacuum?

[@matthewbaxter7502]

This is the best video on KZbin I've found on ac systems for DIY mechanics like myself. Very easy to follow & very informative..Many thanks for sharing your knowledge. You have a new subscriber. All the best from England. 😊👍👍.

[@takismantas1159]

Outstanding video with clear explanation on auto a/c basics. It would had been great if you had demonstrated the scenario of overcharged systems, which is something common. I have found that a lot of people just "blindly" add R134 when their a/c does not cool sufficiently. I hope to see a part in this series going into a little more advanced scenarios. Thanks for your hard work.

[@benntn]

This was an awesome vid thank you for posting it. What do you do if you can't find a leak? I added dye to my car, the low side pressure is 5 psi and the high was 90. Temp was about 90 deg outside. I drove the car around about 20 min, and didn't find any leaks with the uv light. A shop charged my a/c system last summer. but now A/C just blows hot air. Temp at the vent is a100 plus.

[@isa540]

This is a great video with logical excellent explanation.

[@JUSTINMARTINEZ-e6b]

Hey bro!! Very educational and clear with your explanation like a pro !!! My respect to you!!!

[@AC-tl3hl]

One of the best explanations I have seen! Thank you so much!

[@babyking5763]

Great video. This doesn’t only apply to car AC, but all AC. Well explained.

[@kasualskeptik2584]

I agree with my fellow viewers; Excellent video explanation of A/C.. Thanks !!!

[@peterhernandez8781]

The best explanation on AC

[@ikramqureshi586]

Excellent presentation, very knowledgeable. Thank You

[@gambinoanthony1618]

This is excellent for anyone at any level great job.

[@frankdiaz2161]

Awesome breakdown of how the ac system works

[@rschmidt587]

Great video! You described the exact problem I'm having and it made perfect sense. I never would have figured it out without your information. Thanks!

[@demonknight39]

Thx bro ive been having a hard time with ac system for my diesel classes and i wish i found this 8 weeks earlier

[@Kaibil66]

The best and the most professional video about car ac....great job you are the best.

[@mattsmith6828]

Great video! If I got my vehicle's AC system completely evacuated (via a Refrigerant Recovery Machine), do I need to put the full amount of oil back in? Also, is the amount of oil to put back in based solely on how much oil the compressor requires, according to the service manual?

[@Fr0sty4242]

Infographic & video was extremely helpful, thank you so much!

[@ivanthegreat3966]

This man is a national treasure. Trying to figure out what’s wrong with my wife’s 2007 Chevy suburban…

[@danielandresphotos]

this is the best video i have seen and made it so easy to understand... thank you

[@jerradbesch1736]

I really liked the way you showed different readings and explained the issues. My 2007 Honda Accord's AC is acting funny. Readings are good, compressor engages and blows cool air. After about 10 mins of the compressor cycling on and off it goes off and pressures change. Low pressure goes to 50 psi and High pressure goes to 100 psi and it starts blowing warm air. If you turn it off and let sit a minute and then back on its fine for awhile. any ideas?

[@mattjones270]

3 years later and I'm just now seeing this. Fantastic educational video!

[@robjames8581]

Yes, thank you so much for the time and effort put into making very helpful videos like this.

[@Jeffrich308]

Very informative and simply explained! Thanks!

[@tayvo3774]

Most informative video by so far. Thank you so much!

[@franklineastman3349]

Love your explianation, simple and straightfoward

[@petergreenwood9813]

Any chance of a talk about evaporator temperature sensors ? Just had a diagnostic guy finally find my air con problem ,after a lot of $$$$$ with people who couldn’t find what the problem was 🙄. Can’t believe that a busted one of these suckers had me all hot for summer! Enjoy your vids too 👍

[@newjohndeer]

Very well explained. Best video yet!

[@botelloheritage12]

Awesome information here bud. Thank you so much for teaching us

[@khemrinchou9979]

I like your explanations. You are the best. Thank you so much. I cannot wait to see more your sharing

[@carolinaunited4009]

Thanks my friend for the video! The best explanation of the ac. System u e ever heard! Thanks!!!

[@lmajeff1577]

Great video and excellent presentation of the information. Is there a chart that will relate the temperature and humidity to what yoiur pressure gauges will show?

[@VoltageDropDiagnostics]

This was a really good and informative video! Thanks for sharing!

[@RustbeltMechanic]

Thanks man!

[@edduddles7569]

Rusty, the best tutorial on how air conditioning system work by fare. keep up the good work. thank you.

[@sigfriedpalmunda2347]

Very well summarization of what you need to know.

[@EddyJToledo]

Great stuff man, thanks for taking the time to put this video together. Keep it up!