zedjr

I have evacuated and charged with so far 2.5 to 2.8 cans. All 12oz cans. My pressure readings are 240 high side and 40 low side at 94 degrees ambient temp at idle. My compressor never cuts off until ambient temp gets down to 80 degrees or rpm's are above 1500. My system calls for 24.5 or 30 oz. Am still not sure if 24.5 is right or 30 oz. 30 was for the previous r12 system. This is r134a. How much gets stuck in lines i wonder. I seen a tutorial where guy used 4 cans on same exact year accord for 134a system. I'm thinking i need about 6 more ounces in system but then there has to be more than 24.5 oz in system already. System does work alot better than driving and at idle i guess the pressure on high side never get high enough to cut off compressor due to the high pressure switch.
Am moving this post to 90-2002 accord section

holmesnmanny

depends on the vehicle

2fat2furious

canister

I do not use R134, and instead use Duracool. It takes 2 cans of Duracool to charge an evacuated system under vacuum, and one can to top up a system which leaked itself down to atmospheric pressure.

thisguyaves

Duracool the brand, but R134 the refrigerant type. Your lack of that knowledge scares me.

thisguyaves

Upon further reading, because I like knowing things, Duracool uses their own blends, but it is basically R12a which is R134 compatible. Still, duracool is just a brand.

canister

Who told you that? Duracool R12 is highly purified propane and a replacement for R12 and R134a. If you don't know, read technical info on their web site. From here I can tell I know tons more about automotive AC than you.

thisguyaves

You probably do, knee jerk reaction sorry. Googled it after posting about it, shame on me. Live and learn.

canister

No sweat!

DCFIVER

Most automotive professionals tend to err on the side of caution. DIYers would do well to follow these simple guidelines as well:


https://www.epa.gov/snap/ten-questio...ve-refrigerant


There is no legitimate reason to use a gas substitute.....

canister

I am not surprised with these replies, as there is a hostile anti-Duracool campaign going on in the US. But up in Canada I, and a million more drivers, use Duracool. Cheers!

DCFIVER

Honestly ,my only objection to it is that there is no logical or legitimate reason for using it. Also,that it has no OEM approval.


In my experience when an item is brought to market,OEM manufactures will jump all over it, if it is superior to what is readily available,in their quest to one up each other.

canister

Duracool is superior to R134 in many areas: it is cheaper, it is non-ozone depleting, it doubles as a lubricant, and it is easier on the compressor as only about 1 lb of Duracool is required for 2lb of R134 meaning the compressor is using 1/2 of HPs, its molecule is larger, so it is less prone to leaking.
Truckers in Canada use virtually no R134 but line up for Duracool cans, and its utilization in passenger cars is growing. Legitimate or not, there are many good reasons to forgo R134, which requires highly toxic Fluorine and Chlorine to be produced.

DCFIVER

Its not. At all. (at least in the US)

Compressor lubricants are like motor oil. Different compressors require vastly different viscosities. How does this manage to cover the spectrum of these requirements?


LoL, who told you that? Thats not how it works....at all.

Still waiting on you to list some of them.


Im curious,if this refrigerant is so good,why do you think manufactures did not use it instead of R134a?
Even better, why was this refrigerant not even considered during the decade long study and testing for the replacement of R134a?

Why was R1234yf chosen?

canister

I am a user or Duracool, and do not get paid for promoting it. If you need answers, you can contact the manufacturer and hear their side of the story. It was convincing enough for me, and thousands of truckers who lined up to buy it when I was at the store over the last 20 or so years.
Also I cannot speak for "manufacturers", whoever they are. You can contact them and ask as well.

For my upcoming AC repair on the Honda and Nissan I will buy a few more cans of Duracool.

DCFIVER

No problem.

You spoke with authority on the subject earlier,I made the assumption that you knew what you were talking about.

Carry on.