97 chevy crew cab freon capacity

[Rockabillyrat]

Putting all 8oz in the compressor is your problem. You should only put 2-3oz MAX in a compressor.

 

[Trucker2k16]

Putting all 8oz in the compressor is your problem. You should only put 2-3oz MAX in a compressor.

I thought so see i like coming here for help ive had others tell me oh its fine jist put it in compressor yea not anymore 3 in compressor 2 in condensor and 2 in accumulator and 1 in evaporator or whatever other way

 

[MrMarty51]

@Trucker2k16
How does Your AC work now ?

 

[Trucker2k16]

@Trucker2k16
How does Your AC work now ?

So far still good once i fixed that one wire and put oil through system not just in compressor

 

[Trucker2k16]

But its been 4-5 days ive been lazy and had other work show up at the shop

 

[MrMarty51]

My curiosity Was killing me and I just had to know.

 

[Trucker2k16]

My curiosity Was killing me and I just had to know.

Well you know what they say curiosity killed the cat knowing brought it back I may not be the brightest one when it comes to AC and a few other things but I'm not scared to ask for help i do have a few ase certifications but ac isnt one lol

 

[smokymtn65]

Hah it's the only i i have.. and i still dont know much about it. I only got it to buy r12 30 years ago..

 

[MrMarty51]

Hah it's the only i i have.. and i still dont know much about it. I only got it to buy r12 30 years ago..

Me too. It was a class that the Montana DOT put us through, MACS or some such. I still have the certificate in My resume materials. Did a couple of AC units shortly after the course, then, such a long span of time before the next one, forgot most of what they taught and had to go get out the book to get it all figured out again.
One thing I do remember, the closer that the temp is on the in and out pipe of the condenser, the better the AC will perform. I think the book was saying not over 10 degrees difference. You might want to look that up, been too much bridge under the water since those days.

 

[Will L.]

Yup, it was MACS. Same thing here- got it so we could buy r12 legally. The parts houses put it on and paid for it! Haha
That was where I learned r12 is bigger molecules than 134a and that’s why it will always leak through the hoses. Also learned the 1/3 difference of thermal exchange. We spoke about if the two coils were both able to put out 1/3 more heat than they do, the r134a would cool as well as the r12. So many years later learned about the coating from Techline that do the 30-35% increase.

I have to dig out an old cert for something at work, I wonder if I still have the MACS cert...

 

[Jaryd]

What’s funny is I’ve been doing commercial/industrial HVAC for a little over 16 years and have never been asked for a card when I buy Freon. i have never took a class or been certified

 

[Husker6.5]

Well, certifiable, possibly. You DO own a 6.5!

 

[MrMarty51]

Well, certifiable, possibly. You DO own a 6.5!

That one thing alone makes You certifiable.

 

[Trucker2k16]

Hey guys i finally decided to do the a/c again with all new connectors due to the amount of the jumpers from p.o. do these pressures look right?

 

[Trucker2k16]

just took this on today the first was a few days ago

 

[Will L.]

Need to know outside temperature at the time as well.
Here is a couple charts to point a target
Idk if a manual has spec chart for the truck or not. When I did it onntrucks years ago I found specs and had a cheat sheet but have long since lost my notebooks.

 

[Trucker2k16]

Need to know outside temperature at the time as well.
Here is a couple charts to point a target
View attachment 64553View attachment 64554View attachment 64555

76 here but feels like 85 when i chargedthe system the other night is was pretty cool out 64 65

 

[Trucker2k16]

And was 3 12 oz cans being system calls for 36 oz

 

[Trucker2k16]

And also thanks for the reply. S.c. weather is crazy it says its that temp but it sure dont feel it even though we have a breeze

 

[Will L.]

So if the first picture it was 65 outside, 25 low and 170 high...
The low is barely in the range but on low part of it, and high is too high.
So restricted valve would be my guess.

How far down did you vacuum it and for how long? Did you replace the dryer?