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R1234YF Refrigerant

Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Shops, Barns, Varmints, and Trucks
Forum Description: anything you want to talk about except politics
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=201381
Printed Date: 26 Jun 2024 at 11:38am
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Topic: R1234YF Refrigerant

Posted By: Coke-in-MN
Subject: R1234YF Refrigerant
Date Posted: 18 May 2024 at 12:47am

Air in car didn't seem real cold today so thought I would have friend check charge .
Now as he is a pipe fitter / air conditioning specialty - thought it would be easy . NOPE 134A gauge setup wont fit onto 2017 or newer vehicles - only thing mine is 2015 but evidently some vehicles switched before mandated .
So I now need to find adapters for gauge set , find some R1234yf gas, and or have dealer charge system . Evidently reading some sites the cost for dealer is beyond first born and gold bars . So now to figure next step besides driving with window down .

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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."

Replies:

Posted By: DMiller
Date Posted: 18 May 2024 at 4:49am

Spoke to the HVAC guys I deal with here, takes a Special gauge set as to Pressure levels, different lines and so on.

Posted By: Codger
Date Posted: 18 May 2024 at 6:24am

I've never worked with the latest refrigerants but our new Subaru Forrester uses this. Casual glance and I thought the charge port was R-134A by look. I only seen the one fitting with a black cap and don't know if suction or discharge side.

The compressor stated R-1234YF refrigerant and I'll have to delve further into this.

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A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.

Posted By: DMiller
Date Posted: 18 May 2024 at 6:46am

Pressures are nearly a Third HIGHER that R12 to 134A, then add another 1/4 to this new stuff. Gauge set I witnessed High Side high end gauge potential was 600#

Posted By: Codger
Date Posted: 18 May 2024 at 7:29am

I'll look online for a P-T and enthalpy charts to see if any better performance than former refrigerants.

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A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.

Posted By: Coke-in-MN
Date Posted: 19 May 2024 at 5:58pm

The fittings are a different size than 134 fittings and like those both high and low side are a different size . I see one can buy adapters to convert gauge set over for around $12 per fitting , but also a warning before use gauges should be purged to prevent contamination of system .
1234YF I see is around $45 to $65 for 8oz can and system holds 1.8 pounds ,
Was looking up some places and says $250 to $400 to diagnose problems and $150 up to recharge on top of initial price .

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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."