How to Test Car A/C Compressor

#short checking A/C compressor on 03-07 accord #accord #honda #airconditioning #auto #repair #diy

[@tkorte101]

This isn't about testing the compressor, it's about testing the compressor clutch. Big difference.

[@anorsegoddess9797]

Yes and no. A working compressor will turn on when car is running and AC is turned on.

[@AbstractBandit]

If the compressor doesn't click while ac is on, it could also be low on refrigerant. If you fill it up the proper way and the clutch still doesn't engage (click) then the compressor is most likely bad.

[@cruisenTV]

Could also be the pressure switch as well. Could also be the electromagnet. (Unless you check the resistance and it measures between 3-5 ohms. Could be a short in the line like the guy said above and it could also be low on refrigerant. Surprised dude in the video didn’t mention any of these, especially when the pressure switch and being low on Freon is the problem A LOT of the time.

[@michaelhaile401]

How would you check if it’s low on refrigerant? The a/c gauges won’t give you an accurate reading if the clutch is not engaged

[@henm4975]

theres not enough pressure in the system for it to engage. @@michaelhaile401

[@ricardodominguez1763]

It could also be a bad clutch

[@JoeyCorona-st6nf]

@@michaelhaile401this is my problem now

[@user-iy5si9si6b]

I’m 99.9 percent sure that compressor works perfectly fine, why spend 300 dollars on a new compressor when all you have to do is spend about 50 bucks or even less and change out the compressor clutch coil on your existing compressor. It’s just held on by a bolt usually 10mm the clutch drive plate slides out , careful no to lose the shims that come out they’re thin pieces of metal that look like washers , then you’ll see a snap ring holding the pulley in place take the snap ring off then if you’re lucky the pulley should slide out by hand if not you’ll need a 2 or 3 jaw extractor to get it off don’t try using a hammer cause you’ll damage the bearing. Once you got the pulley off you’ll expose the magnetic clutch coil again it’s just held in place with a snap ring get it off and the coil will come right out.

[@jamescrock2213]

damn boss man ninenty nine point nine nine percent? can you post a video?

[@antwainwilliams5335]

To jump the compressor. Unhook it and run a jump wire in both of the notches/slots, then crank the car. Done

[@davidgomez3737]

Ground and 12v? Does polarity matter ?

[@claudiudorache6569]

​@@davidgomez3737Did you get any answer? Does polarity matter?? I got my cable pulled out of the pins and both of them are black, Idk which is which

[@roadking99jokerst60]

The safeguards are now not in play so the pressures aren't controlled.

[@raydiesmoeljadi2457]

If there is no refrigerant in the system the clutch won't engage also

[@elemenopi55]

wait, why wouldn't it?

[@azkc3857]

​@elemenopi55 because it won't detect enough (pressure (refrigerant) in the compressor meaning the clutch won't engage to turn on your compressor so you can have AC in your car/Truck

[@elemenopi55]

@@azkc3857 i see. could there still be enough pressure/refrigerant to turn on the compressor even though there isn't enough refrigerant to blow cold air into the car's interior?

[@azkc3857]

@elemenopi55 if anything you might still have some to have the compressor engage BUT while its leaking you might not have enough to keep the inside of your car cold, so when it leaks completely then the compressor won't turn on and you'll only have hot air coming in Common leak spots are The two Lines High And Low Pressure which have Somthing called O-Rings where it connects to the compressor or the Condenser Condenser could also fail but it's very uncommon Compressors also have o rings and Oil to run the compressor built in which Is main causes of a compressor failing I Recommend flushing your AC system by taking it to a mechanic that can recycle the rest of the refrigerant and then filling it with R134a with UV Dye (Depending what refrigerant your car takes thats the most common one every car takes) once it leaks if it's a high leak then you notice it instantly from letting your car run if it's a small leak you probably have to leave it on or ride it till it leaks the uv Dye and check where in the lines or Compressor it leaked with a UV Light (BlackLight) One last thing c9upd be your lines are clogged up and it might need a flush start with the uv Method first I'd say before you go above and beyond Quite a long paragraph but I hope It can guide you better to your problem

[@elemenopi55]

​@@azkc3857 thanks for the help. i appreciate it.

[@chriso5355]

It's either a bad clutch or the compressor is out of freon.. compressor clutches will not engage if they are below a certain amount of freon in the system to protect the unit from completely destroying it due to lack of freon

[@everdigan2251]

U dont need to buy a new one. Check the electromagnetic part inside that pulley. Mostly them the ones burned out. Around 40usd with a set

[@liubcata]

This is actually ChrisFix voice on top …

[@tkorte101]

Yeah, now that you point it out it's obvious.

[@Kavie93]

@@tkorte101its not even close to chrisfix voice 😂

[@xin0]

Lol

[@omightylegend2521]

I think it’s also important to identify if your compressor has a clutch or not

[@DodgeCharger0526]

This video is exactly answered my question.. THANK YOU!! so I'll check the fuses next before throwing away at least 1000 dollars

[@hatteraslabuf]

“Need a new one” ? Need a new compressor or just a clutch if it doesn’t click?

[@alekogandhinsky6489]

Replacing the clutch is the better way to fix it, it is easy and it costs 1/40 of the price of a new a/c compressor.

[@FuskyTheHusky81]

Im not gonna lie. I was getting a bit nervous with it on the battery like that. When i was young I basicly welded a adjustable wrench to a battery. Got it off with a hammer. Scared the shit out me. Ive also had one blow in my face before so i like to keep batteries safe lol

[@P_double_H]

That is not testing the compressor.. that is testing the CLUTCH of the compressor. The compressor does more things and it could fail in other ways too. The clutch is the first thing to take a look at, but you could easily hear if the clutch is working as it will make a distinctive sound when you press the AC button. What you need to do next is show us how to diagnose a compressor... you guessed it... NOT compressing.

[@GMJ-rc9nk]

Thanks for the info. Mine makes a squell kinda sound on start up. Last for about 15 seconds. I wait till it stops before driving. I've had mechanics tell me that they tightened up the belt but it still happens. Do you think I need a new compressor?

[@benchshark4269]

Good Day Sir, every time I expose the car in the Sun for longer period of time, and decide to drive. The aircon cause a strange sound and not releasing the cold. What's the cause of that problem?

[@buddybox123]

Thank you Luis! I will soon be trying to accomplish this task at home. I am a handyman (literally by trade) so I am hopeful that I can pull it off with KZbin’s help haha 😂

[@eaglehigh-h3e]

Today, I heard a loud and long high-pitched sound, sounded like it was coming from metal somewhere in the car while I was driving. Later the alternator compressor belt was missing from the car. It snapped while I was driving. What happened? What should I do next?

[@kevykev6481]

Can the ac compressor make a winding noise when going bad?

[@cruisenTV]

The clutch bearing can make a noise when the bearing goes bad if that’s what you mean. Could sound like metal on metal wearing against each other

[@FrankGaius]

If the AC light is blinking inside what is the problem

[@andelwells2922]

Hey man, can't seem to find a compressor for my vehicle so I'm looking for an alternative. Thinking about hill billying and converting a washing machine motor to do the pulley work for the compressor. I'm an engineer so I was going to bolt them to body where there's room under the hood, run the lines and use the motor instead of the engine pulleys with the switch working with the thermostat for cool down as well. What's the worse thst can happen? And when I say engineer, I do got my degree, just never practiced it as im also going for entrepreneurship

[@mitchellphillips5056]

What if my clutch is engaging but I don’t have any air flowing through at all

[@geraltthewitcher1822]

My ac compressor moves but it’s starting to shake. That means it bad right?

[@voidmusicpromo]

how did you make it click with it just on top of the battery?

[@jellybeanjellybean-tn2lm]

it is sitting on the negative post of the battery

[@mikekhay523]

02 Tahoe my ac compressor blows cold at idle but when I accelerate it starts rattling loud. But when I turn my ac off I can accelerate with no problem?

[@carlaborens4004]

My Jeep makes a clicking noise all the time whether the car is on or off. The ac goes on and off every 30 secs or so while driving, do you think that’s a bad ac compressor?

[@anorsegoddess9797]

It's easy. Start your car, lift your hood. Turn your ac on in passenger mode. If it's good you'll see the middle moving. If not the middle won't move.

[@MrRohanstar]

You have a lot to learn

[@justintran3265]

It seems like my ac compressor is making a whining noise when I didn’t turn on the ac. Can I just replace the pulley on it or do I have to replace the whole compressor? Any suggestions would be helpful.

[@ace101ification]

Do I need to buy ac clutch too with my new compressor? or does the new compressor have a new clutch?

[@Terryshowedup]

Should come as part of the whole unit

[@trubblekleff3655]

Is rhe clutch in parallel with the two holes? I found out if you put 2 fingers on the holes and spin the pulley, it should suction your fingers while spinning thr pulley..im thinking its parallel with the pumping..im new at working on my vehicle..

[@ksibibadis1732]

This is due to activating the AC at a high RPM (for manual cars), the compressor clutch could be damaged in this case.

[@cruisenTV]

Best way to test the clutch (magnet) is by checking the resistance. Connect a multimeter to the ground and hot wire. The resistance should be around 3-5 ohms. It can work high or lower than that, but if it does, it’s on its last leg.

[@CNSTAdventures]

But you should still be able to spin the clutch without it being on . If it’s froze up then you have an issue with the clutch /compressor

[@saints0071]

So I jumped it and filled it with coolant and it works until I remove the jump wire and it won’t engage itself

[@sergt4031]

Check fuses and relay

[@BarGolum]

You don’t change the whole compressor you just change the clutch, but first you check the refrigerant sometimes the clutch doesn’t engage because is low of Freon.

[@UniQu3Ly_QU33Ni3]

I appreciate your video…Would you happen to know what # fuses & relays I check on a 2007 Chevy Tahoe before I buy a new compressor…??

[@akheilos23]

Should be able to just look up a fuse diagram of your year and modle and can find it that way

[@MartinAngus]

Bmw 116d hi I've bypassed fuses and compresser clicks but doesn't go in as seen on your video, any advice would be appreciated, thanks

[@smid2550]

It could also be an open on the ground side if the thermal protector has failed -

[@frankmontez6853]

When the clutch gets burned up does the system get contaminated ? I want to know the likelihood of needing to replace other parts like condenser , dessicant bag . drier ? I've got a 15 Ford Fusion 2.5 L Looks bad the clutch material is coming out the front pulley

[@fitnessmore2390]

What if no power is going to the A/C & it want come on by turning or pressing any A/ C button?

[@larryhall1569]

Need help to diagnose my 2014 Nissan Altima

[@jeffwright713]

He my compressor is in gaged but system will not accept Freon. Yes I pulled a vacuum first. Is my compressor bad or what did I do wrong

[@creblabo]

What if the clutch is always engaged

[@elreydq10]

So what about if the clutch keeps spinning like it never stops. If so the compressor is bad or not??

[@paulvillarreal2468]

Why dose my compressor keep running after the car is not running

[@pattylyn2677]

Thank you young man. I'm impressed with your knowledge and especially the tutorial you presented as if you are Mr. Professor. Thanks again. Great job! 👏

[@AliceLSMares]

Hello my name is Alice an I have a 2007 Chevy Impala and I have a question, so my car is making a noise someone said it's the compressor but he barley even looked at the car so how does one know it's the compressor? Can u tell just by the sound it's making? An would it still be making that noise if you only needed Freon or to recharge the a/c (my A/C isn't pushing cold air) thank you in advance for any info u can give me regarding this situation 🙃

[@oddtimekeeper]

Hi. I have a Nissan Xterra that the compressor kicks on when I push the AC button.. but stays on.. doesn’t cycle on and off.. and all while blowing warm air. Any ideas? Thanks!

[@monkejr3522]

My car blows cool air when running but warm when stopped, it’s an Infiniti g37. Any way to inspect it or any coming issues I should look into?

[@VQ.Jnthn2300]

I had this problem on my 05 g35 and my ac compressor clutch stopped working after the next couple of weeks. Check if your RPM’s jump up and down on idle if they do you most likely will need to replace the air compressor or the ac compressor clutch

[@fortnitemoments5781]

@@VQ.Jnthn2300 my 06 g35 has been doing this for like a month now but it’s finally getting bad. i’ll be at a stop light and my rpms would jump up and down but i could never figure out the problem but i think you saved me now cause my air is cold that’s why i never really thought it was the compresser but the clutch make sense as well

[@auggie3936]

So question, do you you hook up the wire to a ground or hot prong on the wire plug

[@Divici02623]

Is there any way to check if it has any fluid without the machine? Trying to save some money by changing it out myself and just taking it to a mechanic to fill it up afterwards

[@tahjmahal2024]

Does it has to be oiled and gases before this check can be done?

[@devonswindell9735]

Yesz this is dangerous if you have a leak

[@georgeskinarakais9910]

Great video

[@AlowstayLowKNOWZ]

My ac is blowing hot during the day in my 2017 corolla..

[@frankiebuckley328]

You just need it recharged more than likely but check the pump out see if it’s got an issue like this

[@BruhMan_5]

Our be like me and have 150psi on the low pressure side while revving (150 was the max on the guage so who knows what it actually was)

[@gabegarcia7779]

I’m at 130-135 psi low side and trying to find any info on it and your the first one - anything yet besides buying a new compressor ?

[@BruhMan_5]

@gabegarcia7779 unfortunately not since it turns out my compressor was actually dead

[@TommieTubbs-iv9cn]

Ok what bout 2004 Honda Accord blowing hot air,vents are hot.please help.thx.

[@payzul3122]

What if air blows but not cold ? And it doesn’t need Freon or bad fuse

[@jonathan-wq8hh]

Its not an air compressor buddy. Old ones use r12(forbidden to refill these days), R134A or R1234yf for the really brand new ones

[@bryanmoresby3643]

I have a 1999 Toyota RAV4 and we currently diagnosed that our Air Compressor is making a loud phone-ringing type sound. So far, every time we turn on the car and after a few minutes, the sound begins and would turn off after awhile. I decided to turn on the AC while it'd making sound and it stopped making the sound.

[@misty-i2q]

The bearing of the pullley is destroyed. That will heat up to a point it will melt the rubber cover of the bearing, also, the plastic protection of the magnetic coil will melt and could cause short circuit. Try replacing the magnetic clutch pulley bearing asap

[@bryanmoresby3643]

@@misty-i2q Thanks. I'll take that into consideration. I'll keep you up-to-date if you like

[@ENZautomotive]

Bro finna smoke that clutch if it's locked up 🤣🤣💀

[@anthonycornibert6119]

Compressor may still be good. Could just be the clutch coil

[@noahautumn7611]

Nice idea 💡 Good to know

[@lauriehahn2900]

Fixed the Jeep’s ac compressor. Now have a vacuum squeal after turning off the engine. What is it?

[@marcusssc8493]

Part out

[@stoolie10]

I checked the fuse and it’s good. I checked the relay and it’s good, still clutch won’t engage.

[@songsfromthelord888]

Could be low on refrigerant 🙂

[@stoolie10]

I recently got my a/c serviced and it was low on refrigerant plus it had some leaks that were fixed. Blowing nice and cold now 😊

[@miltonmcloud144]

What is the best way to by pass the clutch

[@Rufuspruitt]

Everything is good with the compressor that it will not kick on by the switch what could be the problem all fuses and relays seem to be good

[@krtolebiohazardcs1.681]

What when it turns nonstop?

[@Minman17]

Good explanation

[@Everybodyshinetogether1]

I took my car to a shop said my compressor bad cuz the inside pully keeps moving while the ac is off told me I need a new compressor is that accurate?

[@Minman17]

From what you typed. It sounds like the clutch is stuck and is engaged no matter what. I obviously can’t see your car, so going based off this the clutch may be bad on the compressor unit. Some shops replaced the clutch part or the entire ac compressor depending on the make and model. As another internet stranger who does not know you personally I would recommend going to a different shop to get another quote or inspection. A lot of times shops will half ass the inspections or won’t do all of the tests to root out the exact issue. So if you feel as if their findings don’t sit well. Listen to your gut and move on to another shop.

[@jeancarter3424]

I have a 2007 RAV4 and my ac just quit coming on. My son said it made a noise ( no idea ) and the next day nothing. It’s like turning on a stereo that’s not connected to anything, not even a power source. I replaced the resistor and nope. The blower motor is good so I’m at a loss

[@Zoroaster4]

Did you look to see if the belt broke? Sometimes they use a different belt and they'll freeze up and break just that belt. There's also a switch that signals whether or not there's enough pressure in the AC system lines. Maybe a rock or something hit a line or the condenser and the noise was the refrigerant leaking out. If you want to test that you can either buy some self add refrigerant with a gauge and it will tell you the ammout of pressure in the system. You just want to stay in the green. Or you can unplug the sensor and bridge the wires and if it kicks on you know your switch I bad.

[@jeancarter3424]

@@Zoroaster4 it has not. It gets no power to the “on/off” switch. We’re checking fuses but can’t locate that pesky relay switch

[@aliciandanahi4340]

My ac blows super cold but it stops working when it wants to then cuts on when it wants too. Ac Air is always cold. All fuses are good, just changed blower actuator. Still nothing. 2016 dodge charger

[@tylerstauffer3818]

so whne the clutch clicks on and off explain

[@81Mafia]

What if it turns on and off every cpl seconds

[@THOMAS-058]

Mine too

[@keenowl1410]

Great video 👍

[@liviabunch]

My compressor was blowing the fuses twice in a month and then now I hear a noise when I turn on the ac...I think it might be the ac compressor...which the mechanic shop replaced last year

[@tarzanargue1202]

why aint my pulley spinning at all

[@ElvisLaurentiu]

cambia compresor

[@ponce8174]

05 toy avalone 3.5 .no freeon system .I added 12oz of freeon it turn on hot air still gage on red

[@renegvalero]

My mitsubishi montero sport doesn't get cold the compressor kicks on an freon pressure is good what can I do to it

[@GhostShadowSniper]

Thank you!

[@MuhammadtayyabTayyabmughal-u1g]

Where are you from?

[@rsyumul2625]

Clutch doesnt engage with car button but engages with direct power, next guess?

[@instaboiidsg2117]

Low on feron. Systems have a protection

[@jonathanclark6489]

very nice

[@Speakerboxers]

Good vid

[@teddiazjr.6223]

Very good video

[@bathshebahoward2197]

Hey👋🏽 Gina girl, Happy Tuesday 🥰….Enjoy your trip!!🏖️🍹👙

[@leenevin8451]

Low pressure switch??

[@buckybucky1250]

Your the best God bless brother and trust in Jesus

[@Rice-bowl214]

Love it bro east to understand clear and simple I could follow good deal man

[@sebastianbaba8906]

Is this RYAN GARCIA AFTER TANK FIGHT??😳😮

[@thecopycats9395]

You need a new coil.. The electromagnetic coil in the clutch assembly is bad that's why the compressor isn't engaging

[@MartinAngus]

Thanks for prompt reply

[@juliesalinas7567]

Hello, I wanted to ask you if you could help me with my car. I have a 2013 Ford Edge that has a dual system that blows hot on drivers side a cool on passenger side

[@2RealMel]

I just changed mines for the first time

[@sirjohnahayfalcon]

You are a great afro american thank u sir!

[@michellefalcon176]

I constantly have to disconnect and connect my ac compressor for it to turn cold. What could that be?

[@zohairsyed6387]

when i press the a/c button in my car the pulley doesn’t move. I unplugged the wire and connected it to the positive side of the battery, after which i hear the clicking sound and the clutch engages. what does this mean and what should i do to fix the problem. Thanks!

[@zohairsyed6387]

I believe you stated that if it engages it could be the fuses. My car is a 2012 Accord V6 and I have swapped the horn relay with the magnet clutch relay but that didn’t do anything. are there any other fuses or relays that I should check or replace too! Thanks again

[@rusanyukaare179]

You don’t have enough pressure in your system, check for any leak and top up your system

[@julienson2]

Very useful bro

[@jorgemaciel8282]

Hey bro I have a 1997 Toyota Camry where is my air compressor located at my AC is making a humming noise

[@THOMAS-058]

I added freon to 2018 fiesta air conditioner clutch clicks on for about 5 seconds then clicks off for 5 then on for 5 but still not cooling

[@DarrenWare-w5x]

Either too much freon or not enough.

[@majed9r]

This is how to test the compressor clutch not the compressor itself.

[@user-BOAZ]

דבר ראשון תודה לך, יש לי שאלה, האם אפשר לבדוק על הרכב גם כשאין גז במערכת?

[@ChristianVillanueva-y9y]

What happens if it is the fuse but it blows everytime you replace it

[@BrandonHunter-yb1vd]

Same fckn' problem I'm having,guy told me it's the clutch going bad. It's either low on coolant, wires ground out. I'm confused as fck to!

[@will_and_rory]

The fuse is blowing to prevent the wires from catching fire if the system draws too much current. So if the fuse is blowing it means the system has a bigger problem causing it to overdraw current, likely the AC compressor clutch or clutch bearing seizing. Replace the compressor clutch.

[@SweetKillah97]

Can someone help me please! When I’m driving the I can feel the air coming in as if I had the AC on but it’s actually off. What can be causing this?

[@BigRoss5150Gaming]

Does air come in when ur sitting still in traffic? Or only when ur moving?

[@AngelMorales-mc8rp]

My a/c still hot I already did a vacuum new Freon. And still not working the compressor is engaing

[@kidsavage86]

Thanks