AC not blowing cold, then it works fine !?!? What could cause this ?

I am very impressed by your diagnostic skills

Great video. Thanks

Could you get a holder for your camera? We want to see the work not narrated!

Debris inside the expansion valve is from the compressor. Many times it’s the compressor that causes the entire system to fail. When a compressor fails, you usually have to replace everything. Condenser, compressor, lines, etc

Peg or pegged.

I had a problem like this years ago and it was the evaporator icing up and the blower motor wasn’t blowing through the evaporator and then it would stop blowing cold. The drain was dripping but was a little clogged which allowed the water to back up and freeze… Cleaned out the drain hole and the problem was solved…

Can you imagine you didn't get that torx out?. Awesome video it helps a lot thank you.

I replaced my Snap-on alan tools and replaced them all with Mac Tools R.B.R.T. drivers because of rounding off even on good parts.

What freon? There is no freon , your delusional 😂

Can you spray some WD-40 on this Torx Screws and letting them sit so the WD-40 can penateate some before trying to unloosen them? Or would rhat interfere with the Unit since its not AC oil?

Excellent video

F%$ @$$

Can the High pressure switch cause this too?

Where are you located? Florida? Haja😊 my Saturn vue 2009 .sometimes it reads engine hot a/c off but after a while its clicks back on cold a/c

😂😂😂😂😂
“I think we have a junk Altima out back…..”
that’s a redundant phrase, u could just say
“I think we got another Altima….”

isn't this just a band aid to the real problem? where did all of that gunk come from? It can only come from the compressor, correct.

Did you use anti lock back on those bolts

Luckily you didn't have to take the evaporator out. Good job sir.

Refrigerant, not freon

Very informative. I just replaced my compressor and condenser. Bought the car with a seized compressor. Now my clutch kicks on and off as I drove home from charging my system. I did notice that i had lack of power like the compressor had alot of load on it and its a v8 shoulnt be struggling on the freeway. So this really narrows it down for me. Im going to do another thuro check to make sure this is my issue which im already 100% sure it is

Interesting??? Went to the dealer last week they said "for some reason it would hit high pressure then push hot air through one side" the wanted 1200.+ for a new compressor. Now I'm wondering 🤔

That's a lot of knowledge you gave us.
Thanks for the video,on the Nissan.
Cold A/C. Everyone loves.😉☮️🤙

Nice work

I've had to change the TXV on my old Honda Accord project car a couple of times, the exact same symptoms. If you just start the car up cold, the a/c would blow super cold and show normal pressures with the proper charge level. But after you drive it for 2 or 3 mins, it would start cycling all the time, and lugging the engine super hard. I have to do some work to actually drop the evap case out of the dash though, the TXV on mine is inside the evap case, and it uses the style with the long temp sensing tube. Not a hard job per se, just annoying having to work under the dash board. I think debris in the lines or system caused my TXV failures, I finally got a pretty good deal on a complete new system through Rockauto for about $230 dollars. Best money I ever spent, new condenser, new TXV, receiver/dryer, compressor, and I already changed the lines and flushed the evaporator.

I had this exact problem with my system and doing this replacement did not fix the problem. Ended up being a faulty low pressure switch.

Hey i got a 2011 eclipse and look like there is freeon on the system and my compressor clutch used to engage but it woult turn on and off but when car was at a stop or light clutch wouldnt engage only if i would be driving
About a month ago we got to 85° and clutch wont engage ac comess out hot but still freeon on the system
Found out evaporator or expansion valve are leaking so im about to replace both and the pressure sensor and blow the drain tube, you think that could fix my ac? If it dont work im out of ideas

Thought the txv receives high pressure gas and changes to a low pressure liquid....heat from evap changes to a low pressure gas...back to the compressor.

This man fixed the problem and that is all that matters, you can truly tell he cares as well, god bless you.

Great job. I recommend replacing drier anytime system is opened. Also break vacuum with nitro rather than with atmosphere. The oils used with R-134a are hygroscopic meaning they have an affinity for moisture. It cannot be removed by vacuum only with desiccant in the drier. If TXV stops feeding the evap then low side will go into a vacuum. You are essentially pumping the system down and stacking liquid up into the condenser. That reduces the surface of the condenser and causes high discharge pressure. Hope that helps you some.

easy in no such thing , man that's so true .

How do you attach Harbor Freight gauges without damaging the high and low Schrader valves when you screw them down?

Would be a good idea after recovery to add a slight 2/3 psi of dry nitrogen pressure, if you have gone into vacuum, so that the system doesn’t suck in the humid air when disconnecting lines rather a slight puff out. Make sure you have goggles on you don’t want the oil spat in your eye 👁️

i have a 2010 civic and the car ac blows cold when i have it in the garage but when i leave it outside in the sun it only blows air. the clutch kicks on, fans turn on and relays are new. can this be a bad valve as well or the condenser

I've had bad experiences with aftermarket expansion valves,always use oe

Great video - including the explanation of the expansion valve and what it does. Thanks!

Having driven a 2002 Altima for 262K miles and fixing a lot of things myself, I felt a little twinge of PTSD watching this video. Working down near the firewall (ABS, A/C, etc.), I had my fair share of cut knuckles and fingers, and streams of profanity.

Hey man who cares if the machine is old run it

Looks like you have a compressor that's on its way out.
Seen that black stuff on other worn out compressors

Does any one help me find the issue Ac compressor doesn’t turn on .. new Ac compressor new Relay new high pressure switch but compressor doesn’t turn on … but when I put paper clip on the relay compressor turn on ..

Any idea what could’ve caused the expansion valve to fail?

I'm unfamiliar with the term "Pin." I would assume that the gauge indicator is maxing out and hitting the limit pin. Is this correct?

Thank you for such a great video.

good video. i have a Subaru Legacy 03, and i have a problem with the AC, it is run good with cold air and sudendly start blowing hot air , i check the compresor is good , the relay is good too, probably i have to replace the valve

That compressor is slowly dying

What about a system that has a high low side pressure and the high side doesn’t budge from 100?? (New ac compressor and sensors)

Learned alot,!

Hi ... Kenny I have a 97 4runner and the freon went out and it was blowing warm air so I took it to a mechanic and he recharge it, but it was cold for a couple of days and went warm again so i took it back and the mechanic tested for leak, but it seem to be fine no leak was detected so he determine it must be the ac condenser under the glove box for the 3rd generation 4runners and so he replace the ac condenser and the expansion valve, but now when I turn on the ac it didn't blow many cold air and we trace the coldness of the freon going through the pipes and found out that the freon was only getting to the expansion valve , but will not pass through to the ac condenser so the air was only blowing cool, not cold and every time I turn on the ac the compressor would turn on and off repeatedly just turn on and off on and off after it turns on for a couple of seconds than it would turn off again will you tel me what is wrong with my ac system I needed help, but couldn't find anyone knowledgeable around here and the sshop wants and arm and a leg for them to just look at it. please help me to get my ac running correct again.

Did the new txv have adjuster on the end? When I install them I try to check and adjust the superheat by turning that screw in or out. In gives more superheat and out gives you less.

Hi buddy.

My chevrolet Sonic just keep cool air for a week then just Hot air get in the cabine, when I check the liquid line is Cold and the suction line is enviroment temperature so, do you think it is a expation valve problem or lack of freon due a some leake? Thanks in advance.

May you please tell me how you knew it was the expansion valve and not the pressure switch. I am having this issue. Thank you.

The low side should have gone into a vacuum if the TXV was stuck closed. The high side would go up but should not have pegged out. Usually if the high side goes that high it is a lack of air flow over the condenser, either from a faulty fan or a plugged condenser.. Tip; always use an anti-seize on the TXV bolts.