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  #1  
Old July 6th, 2020, 14:20
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blu3fan blu3fan is offline
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Meh a/c

Hey guys. So I finally after years got the ac in the jeep working .
The compressor had a sticker that said prefilled with oil.
In short. Two weeks later. 3 drives probly 2 hour runtime after the fill
Hot air. So I figured leaks.
I was gonna pull and recharge with r134a but after contacting the compressor manufacturer to find out what oil is in the thing he tells me...


The oil in the compressor is for storage and shipping only. You have to drain and add the proper type and amount of oil back to it


So

Pretty sure the compressor is a gonner.
Is this new dryer and put another can of cleaner though the evap ?

Ugh
Best course of action? Pull the compressor apart or no?
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  #2  
Old July 6th, 2020, 14:21
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Re: Meh a/c

Pretty much just looking for Input.

Kinda wanna fill with oil and r134 and go for it?
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  #3  
Old July 6th, 2020, 14:27
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Re: Meh a/c

I should add. Ac never worked. I replaced everything *new* cept the evap. That I put a can of cleaner and air through.
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  #4  
Old July 6th, 2020, 18:45
CJR CJR is offline
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Re: Meh a/c

If it were my car, I'd evacuate the system of all oil and R134A and put the right amount of the proper oil in . Then I'd add a couple of cans of Red Angel (#1 rated) A/C sealant, jumper out the low pressure switch (to prevent clutch cycling) and charge with R134A to the proper pressures required for the ambient temperature. Finally with the engine off, I'd pull a vacuum on the system to remove moisture until I got to about 500 microns. Then I'd see if it was fixed. If not, then I'd start replacing components.

Best regards,

CJR
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  #5  
Old July 6th, 2020, 18:53
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Re: Meh a/c

Quote:
Originally Posted by CJR View Post
If it were my car, I'd evacuate the system of all oil and R134A and put the right amount of the proper oil in . Then I'd add a couple of cans of Red Angel (#1 rated) A/C sealant, jumper out the low pressure switch (to prevent clutch cycling) and charge with R134A to the proper pressures required for the ambient temperature. Finally with the engine off, I'd pull a vacuum on the system to remove moisture until I got to about 500 microns. Then I'd see if it was fixed. If not, then I'd start replacing components.

Best regards,

CJR
I was thinking about giving this a go. Glad someone else thinks that is appropriate.

Is it worth opening up the compressor or is that just asking for more problems?
its a brand new compressor. or was LOL.

well... I know what my weekend looks like
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  #6  
Old July 6th, 2020, 21:46
Black1990jeep Black1990jeep is offline
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Re: Meh a/c

since the oil is distributed thru the entire refrigerant volume, the amount of oil required is dependant on the size of the entire system. This is why the pumps dont come with the "right amount" of oil in them. The true right amount is dependent on the entire system volume.

Now your system stopped working, and we also know if did not have the correct oil in it.

did it stop working because...
1... Freon is gone, leaks! leak can be from pump running with no oil, which causes shaft seal to fail, or you got a leak elsewhere unrelated to the oil issue.
2... Pump no longer compresses the Freon, pump died do to lack of oil.

so first do a vacuum leak test, if she leaks, well stop and find the leak, maybe it is a pump seal, maybe something else.

if system is currently leak tight, ie you still have Freon in it, that means the pump is probably bad.

now if the pump self destructed, you may have metal debris in the system, which means things need to be cleaned before being brought back into service, you dont want metal shavings clogging things, or recirculating thru the pump.

so job one is determine if you lost the Freon or not. if no freon, find the leak(s) if Freon is there, and you are leak tight, then the pump may have failed. inspect for bits of metal in the hoses, tubes, coils, etc...

keep cool!
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  #7  
Old July 7th, 2020, 07:45
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Saudade Saudade is offline
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Re: Meh a/c

When my compressor blew years back, I bought a replacement that came charged with oil. I recall the directions saying something to the effect that it had the amount of oil for the compressor, but not for the entire system. I had to pour it out, measure it, and add the extra amount to cover the rest of the components. I installed a new compressor, condenser, expansion valve, and dryer as well as flushed the lines and evap, so my system was bone dry.

Vacuumed, recharged with R12 and it still blows about 40F on max.

A few pics of the carnage.



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  #8  
Old July 7th, 2020, 09:13
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Re: Meh a/c

After looking at these pics.
gonna evac it.
Put my oem compressor back on.
and rip this new one apart.

if its good. ill proceed to fill with oil. if not. I got some cleaning to do. hopefully it's not terrible.
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  #9  
Old July 12th, 2020, 13:13
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Meh a/c

I think the seller has no brains

Sent from my Pixel 3 XL using Tapatalk
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  #10  
Old July 12th, 2020, 13:14
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blu3fan blu3fan is offline
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Meh a/c

Went to get her drained. The only pressure was in the cap. So refilling with oil and r134a and giving this another go

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  #11  
Old July 12th, 2020, 18:13
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Re: Meh a/c

pulled a few of my connections apart and found one O ring had split. probly my leak.
replaced it. system vacuumed, gonna let her sit overnight and see if we lose pressure. then fill her up.
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  #12  
Old July 13th, 2020, 22:24
Heavyopp Heavyopp is offline
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Re: Meh a/c

What compressor did you end up buying?
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  #13  
Old July 14th, 2020, 17:18
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Re: Meh a/c

I bought a UAC.
I have found no metal shards and still tons of oil in there. looks good. gonna fill her up this weekend.
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  #14  
Old July 19th, 2020, 07:27
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Re: Meh a/c

okay so I am a little confused and maybe someone can help.

So.
when I took the jeep to get it filled initially. the guy could not get it to pull refrigerant.
he messed with it for like 20mins bypassing the clutch and tightening and loosening the r12 fittings around the compressor eventually it filled and was good.

After it leaked. I did a quick check.
Everything seemed fine. no shards oil was still in the compressor.
so I added some more oil and went to fill her.
Same issue.
Wont pull.
She held vacuum. and when I turned her over the pressures changed.bypass the clutch I did not see pressures change.

is there something im missing here?
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  #15  
Old July 19th, 2020, 09:06
Agreen Agreen is offline
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Re: Meh a/c

Quote:
Originally Posted by blu3fan
when I took the jeep to get it filled initially. the guy could not get it to pull refrigerant.
If the clutch isn't engaging, it won't create a suction.

Quote:
Originally Posted by blu3fan
he messed with it for like 20mins bypassing the clutch and tightening and loosening the r12 fittings around the compressor eventually it filled and was good.
What do you mean it was good? It took refrigerant and cooled off?

Quote:
Originally Posted by blu3fan
After it leaked. I did a quick check.
Everything seemed fine. no shards oil was still in the compressor.
so I added some more oil and went to fill her.
Same issue.
Wont pull.
She held vacuum. and when I turned her over the pressures changed.bypass the clutch I did not see pressures change.

is there something im missing here?
I'm confused. So it leaked out again? If you're trying to fill it and it won't take refrigerant, it sounds like your fittings aren't working right. They do have schrader valves in them, so you might be using the wrong type of conversion fittings.

Have you done a refrigerant leak test yet?
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