What To Check When A/C Compressor Is Not Turning On 

Very good! This guy is a very good troubleshooter. I love how he used and interpreted the electrical schematics properly.

Absolutely THE best AC troubleshooting video I've seen!!!!! Great job! Thank you for making this video!

The best video I have ever seen, you did an awesome job explaining all the details.

Glad to see you back Homie Hector

Awesome troubleshooting/diagnosis! Thank you so much for posting.

Welcome back. Missed your videos. 👍 👍 👍

Nice to see you back!!

Liked the way you explained about the ac clutch and checked the fuses and wiring. Good mechanic.👍👍👍👍👍

Hector, long time where u been as always good information and approach how to check the A/C thanks for sharing.

Very well done. It's relieving to watch such a professionally put together informative diy.

Thank you hector great information and instructions

Amazing way to explain. Thank you.

Best darn informative video!!👍👍 Well done!

Thanks for the info! Very knowledgeable!

You are a fine teacher

Excellent video Hektor - youre a consumate Pro. Thank you for taking the time to make such a high quality and INFORMATIVE video. Love to watch you work when it comes to electrical diag - you break it down simple style for us potato heads - I always learn from watching you. Keep em coming Bro!

Your a gem brother

Excellent video

Lol I enjoy the edits and all the effects. Makes the information more enjoyable. What state are you located in?

Welcome back! Great video thanks! since you are mobile what do you use to discharge the system in the field?

Great video! 😃

Great video thank you. very much. I wish. I have one like you. to fix my same problem. in Austin, TX. Thank you again.

You gave a pretty good and clear explanation on how to troubleshoot it. I have the issue with my car, tried to recharge Freon but I noticed that the clutch is not engaging so I’ll follow your tips to see if I find where the CHINGADERA isn’t working. 😂😂😂😂😂🤣🤣🤣🤣😂😂😂😂😂😂😂 Juts loved when you called it “chingadera”

Very well explained

very nice video !!

A system low on refrigerant would not allow compressor to engage as well. Excellent video troubleshooting. The only thing I would've done is purge the yellow line once removed from vacuum as it has outside air. Use Schrader valve to purge air out before adding to low side. Nice job

Thanks man perfect example

Great video new sub

oh man long time no see!

Good job

Im into failsafe of computer systems but often in videos they describe to much for beginners which is very annoying , i can understand that you are pro and if you havent taking your lessons you should not mess with this. Love to watch it anyways 💯

Hi brother thanks a lot for your video help a lot's please take care

You da man Hektor!

Very good job homi thanks homi l like it

excellent!

Excellent🎯👏🏼. Thank you. How…., did you remove the 134 that was, in the system??

Fantastic!

Bad ass Diag dude

Wow a master tech!

Very well explained practically showing everything. Really you know your profession very well. Great video. God bless you. Thank you, sir. 😍😍👍👍❤❤🌹🌹👏👏👏👏👏🇵🇰🇧🇷🇺🇸🇨🇭

Really good video. But I noticed that you didn’t change the filter drier. I need to change my compressor but they keep telling me I absolutely need to change out the filter drier but taking the entire front end of my vw Jetta is not an option for me. Is it okay to just put in the new compressor WITHOUT changing the filter drier?

Very good

Good morning hector. I am learning a lot from your video. Now, where can I buy a portable temperature gauge like yours. Just tried eBay and saw none like yours. Thank s in advance.

My ac compressor not working, I did some test on your video on the 3:36 of your video you get trst light on on my case I don't have that ligt on... what's next step if not getting test light on??? Thank you.

My AC Compressor is not engaging, but i can move it freely with my hand, but i also checked and am low or empty on Freon, it was working fine several weeks ago, but in NYC its winter so i havent been really paying attention until today. No AC, no Compressor engagement.... could it just be that i'm low on freon? I'll add some and see if it kicks in.

I have seen other videos where they said you need to add oil to the new compressor, too. Iknow the compressor comes with around 3 oz inside, but is it necessary to add at least another 2 oz can?

On the AC compressor, do you primer it before installing it with compressor oil?

The best video la neta

Nice vid bro, i have a 05 murano was blowing cold before i over charged it by mistake and it stopped working. i changed my compressor with clutch, changed ac pressure switch, changed the ac fuse which was blown and still no cold ac smh my next step is the ac relay if that dont work i dnt know what else to do, any suggestions?

My car ac stop working, and i bought the compressor like 2 yrs ago brand new, change the compressor relay and still nothing. I put direct power to the compressor and it kicks on, any suggestions and i vacuum the whole system and replace the pressure switch new ass well.

Can you make a video on how to empty out the Freon.

I dont get power at the conector, (yellow wire) but I do have power on the fuse and the relay, you think the wire is damaged?

Question ? 🙋🏻‍♂️ you used the same vacuum pump for residential A/C for the car?

Where can I find those diagrams, that u showed on your video.

I have a 02 f 150 ac clutch not pulling in I have power to my plug on the switch in the cab I have power to my fuses and relays but can't get anything to my compressor I checked the continuity of the switch and it checked good but one of the prongs has a good bit of movement so I'm thinking long shot of bad cab switch or broken wire? Any thoughts?

Amen good video but in my case I connect I testing the compressor connected directly from the battery to the relay in the compressor is start spinning but when I disconnected the wire from the battery the stop

What could cause the ac comp 10amp fuse to keep blowing up??

Something i notice with the hyundai is that the ac compressor oil does evaporate out of the compressor causeing high readings going up in the yellow

Another solution is replacing just the compressor clutch instead of the whole compressor, which saves time and $$$ money.

So ac clutch wasn’t engaged because it was low on Freon? Or it engaged because you pulled vacuum?

I’m haveing same problem compressor won’t engage clutch won’t work with out useing paper clip in the reLay please help me tell me wh❤at

How did u check the fuse with jus the black fuse?

Need contact info, Do you take cars locally. Pomona is close by need a dignosis on a dtc code Mustang 2016 GT

my chingadera 2001 chevy silverado don’t have power to pressure switch all the fuses r good can u help

so is the red side open> You said you were charging the low side only, but when did you open the high side. You had to open it to see a reading, but when?

Hi brother thanks for your videos I'm a subscriber. Question please... I have a 1995 Lexus LS 400. The radiator fan is not activating. It does work because i tested it. I disconnected the connector that's connected to the ac receiver drier and the radiator fan turns on and stays on continuously the whole time. But when I reconnect the connector the radiator fan turns off. I'm trying to fix the fan so that it turns on when I turn on my air conditioner but the fan does not turn on when I turn on the AC. I feel like it has something to do with that connection but I'm not sure. Do you think I might have a bad sensor that's connected to the receiver drier? Thanks. Anybody knowledgeable please reply soon.

My ‘05 Subaru Outback A/C Climate Control Unit stopped working. I wish you had a video on troubleshooting this.. I’m going crazy lol

Hey brother where are you located?

Help. The AC Compressor kicks in when bypassing the relay but not when I turn it on from the inside. Can it be that it doesn't have enough gas pressure in the system? Or is it that theres a cut wire that sends the signal to turn on the AC?

What about is the compressor is clutching ?

When I try to turn on my ac my rpm’s go up a lil and the ac doesn’t come out cold any ideas on what it is?

compressor engages if bypass relay. power does't go to relay. pressure and temp switches are working. what else problem can be?

How much would this cost to get done

Why was the pressure so high when the compressor wasn't running?

Always change condenser and drier at same time

Is it possible to just replace the clutch instead of the whole compressor??? More affordable? Thanks

I changed my ac compressor out because the clutch messed up. But new clutch won't engage. I don't have those tools you have to test, is there another way to test?

How much PÁG oil do I put on a compressor?

Hey bro why does my radiator fan turn off when i try to turn the ac on. As soon as is off it turns back on to cool engine. I know there’s something with the ac the clutch turns on but blowing fire at the vents 😂 any advice

Where are you located state an city

If there is no ac. Is leaked the compressor engages or not

oh, why not A/C magnetic clutch replace only ?

Could you have just changed the clutch and not thr whole compressor?

Mine only kick in with the paper clip at the sensor box but not on the accumulator wire sensos. Any ideas

mine engaged for 1 second and turn off .low side reading high pressure what could it be 😢 toyota previa 97

You must be like me, and you decided that you didn’t wanna work for employers anymore! Always seems like they want to pay you as little as possible and give lots of BS ! Great video!!

The link to the tools is not working

I’m having a similar problem. I’ll completely empty the system and when I try to fill it it’ll literally say it’s completely full after barely putting anything in. So I’m assuming there’s a blockage somewhere. Not sure if there’s a more common place to check for blockages. Any recommendations would be appreciated. Btw I’ve already checked all fuses/ relays. I also checked high side pressure switch which happened to not be closed. Thought I figured it out. Replaced that and it’s still not closing. So I’m not getting enough pressure on high side for switch to close even tho when I put gauge on it says it’s completely filled. Any info would be appreciated!

Where in Pomona i need help my car asap

Video helped a lot. Wish you were local to OC CA. Need mine fixed before I leave to basic training

Took my car to AAA Auto Repair Center on Tully Rd in San Jose to repair the air conditioning. They told me that the compressor was bad (which I had already figured out since it had a frozen clutch..couldn't push it in by hand while engine was off). I know compressors cost about $300 but they were going to charge me over $1500 to replace it. Then, later, they called me and said they would have to also replace the receiver drier and that would cost another $400 or so. So, after I went back to pick up the car, I looked under the hood and saw a nice shiny new compressor but couldn't see the receiver drier until I got home. Turns out that the receiver drier is like welded to the side of the condenser and has a plug on the bottom that needs to be removed in order to insert a cloth-like cylindrical shaped tampon-looking "drier" that takes moisture out of the system. That's all they did...and they charged me over $1900. The drier "tampon" can be bought at auto stores for from $15 to $35. And the compressor can be bought for about $300. My car is a 2014 Hyundai Tucson. Once you take off the splash panel under the engine of the car and look up at the bottom of the "condenser", on the driver's side of the vehicle, you can see and access the "receiver drier" plug to remove an then to insert the "tampon". I couldn't drain the coolant into a collector before removing those parts so I had to have all this work done by "professionals". Funny, not, how the government will fine you big bucks if you let the coolant escape which helps contribute to global warming but they have no problem sabotaging gas pipelines like the Nordstream pipeline which belched tons of gas into the atmosphere for many days! It's no wonder we are having high, record, temperatures. Wars don't help either. Same thing happened after WWI and WWII..record high temperatures worldwide! Thanks a lot Putin...you son of a b...!!! Putin needs a "b" to the head!!!

Can I reset ac by pulling fuse then putting back in? Should car be running? Should ac be running?

Why not just switch out the clutch?

Question on my 62 impala with vintage air , I’m not getting power going to my AC compressor. I have a 5 pin relay ,pin 30,85 and 86 have power but nothing going to pin 87 which goes to compressor btw I did replace the relay still nothing any help please

So even if the low side is reading retard and the high side was reading high I did all the wiring checks and power was present at the compressor so I determined the compressor was bad but the person has one of those ac recharge with a gauge and idk if they just added too much refrigerant and I asked them and she said no but would an over charge cause the pressures to be that high? It was also hot that day is was 100 degrees.

Tengo un Infiniti g 37 y hace lo mismo el compresor don’t engage

What if no air is blowing through the vents?

9:36 😂

En mi carro el compresor entra cuando va corriendo y tiene aire frio, al bajar la velocidad deja de enfriar, alguna sugerencia, gracias por tu atención

Wonder if he’s so busy he can’t upload that much? Or if he doesn’t get enough work to upload more frequently?