I was going to suggest also to check the amount of gas in the system. Too much gas will make the compressor fail and act funky
Need some A/C advice
- Thread starter jsalinas000
- Start date
You cannot properly fill an AC system with that crap you buy at oreillys. You should really consider taking your jeep to a shop for AC work.
For those of you that are going to recharge the system from EMPTY. According to the Factory Service Manual in section 24; the recommended factory charge would be 1.25 lbs (20 oz).
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Where I’m going is that the if the system is not charged to correct weight then the compressor will produce pressures that are outside of the allowable range. The compressor may turn on initially, then shut off when commanded by the pressure sensor. As the pressures return to normal the compressor kicks back on until it happens again. When the compressor runs you’ll get cold air, then it will get warm when it shuts off. An easy way to tell if your compressor is running while it’s blowing warm air is to look at it and see if the pulley is spinning.
There are a lot of variables when it comes to AC, but the first step of diagnosis is making sure it has the correct weight of refrigerant.
Starting at page 1510, she can learn about the system and how it works. Teach a person to fish...
Yeah, it's not like the old R-12 days where you could ballpark it & be fine. Hell I filled the r-12 system on my old Mercury one time with butane & it worked for over a year. Newer r-134 systems are much more sensitive. Have you ever messed with R-1234? My neighbor asked me last year why the dealer wanted something like $350 for an evac & recharge on his new Cherokee, I had no idea that stuff is so expensive.
Not only is the stuff extremely expensive but the robin air machine that I used at Chrysler had mandatory steps. An evacuation/recharge took about 2 hours because you couldn't bypass the timers.
I believe R-1234yf was originally released in Germany about 2 years ago...
Very difficult refrigerant to work with.... due to the compounds in the refrigerant.
You need to be 609 certified with the EPA to work with this refrigerant.
The machine you use needs to be calibrated specifically for this refrigerant.
Very difficult refrigerant to work with.... due to the compounds in the refrigerant.
You need to be 609 certified with the EPA to work with this refrigerant.
The machine you use needs to be calibrated specifically for this refrigerant.
Chrysler started using it in 2014/2015 time frame on some vehicles.
FWIW I remember getting my 609 certification in the early days of internet based testing over a period of like 20 mins.
I was under the impression that there was a newer EPA certification specifically for R1234yf. Was I misinformed ?
I dunno man, my 609 is almost 20 years old. I used to put butane in R-12 systems so it's probably just as well.
If you have a 609 certificate you’re not required to take the test again. That question along with other FAQ’s can be found here:
https://www.macsw.org/web/Online/Certification/FAQs.aspx
Not to date myself, but I went to school for A/C back in the mid 80s. Most of my background is with Industrial and Commercial refrigeration and A/C equipment along with the occasional automotive.
Automotive air conditioning is a far cry from VFD driven centrifugal chillers so I will bow to your automotive A/C experience.
Automotive air conditioning is a far cry from VFD driven centrifugal chillers so I will bow to your automotive A/C experience.
Lol, I was just trying to add to the conversation, no reason to bow
I’ve read your posts, you have lots of knowledge to share.
I have my 609 card from ‘02 in my safe so when the apocalypse happens I can be credentialed enough to provide the survivors with compliant cold air.
Lol, as many here can attest, “it ain’t cheap to be cool”
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