5 ac compressors

[Brother Bill]

Trying to sort out repeated AC compressor failures. On the 5th one. They dont last a day.

system flushed.

whats next?

 

[Brother Bill]

85 K20 Suburban 350

 

[AuroraGirl]

What Kind of ac compressor? Pancake? Sanden
Maybe a aftermarket kit kind?
Variounsoption show us your setup.

any new components beside that?

are you using oil And the proper amount of r134a
Oil has to be compatible with the refrigerant and the compressor and the o rings.
Is a vacuum being applied to dry and empty the system?
Was it flushed?

 

[bucket]

Are they locking up, making noise, or what?

 

[AuroraGirl]

Are they locking up, making noise, or what?

Just like dad he dropped a load and dashed to never be seen again


Or in a less graphic manor, he went for cigarettes and still we wait


Damn, I even replied 15 minutes after he posted

 

[AKguy]

He’s a busy guy.

 

[Doppleganger]

Sounds like a very contaminated system. I'd be flushing/replacing the condenser as well. Do those older systems have orifices? What kind of PAG oil and how much you putting in (and where)? Some goes in the compressor - some goes in the accumulator.

I wouldn't have in my possession any compressor that wasn't made in: 1.USA, or 2.Japan.

 

[AKguy]

So, when a shop tells you they checked the system for contaminants and it was clean, how do they perform the function?

 

[Bextreme04]

Generally they are running an automatic machine that will pull the refrigerant and oil out and run it through a filter. They draw it down, then open up lines and look. You can tell pretty easily when it has a contamination issue. You'll see sparkly stuff in a line or even worse black death when you crack a line. Black death means you need to replace everything... you'll never get it out of all the little spots and it will kill a new compressor fast.

 

[SquareRoot]

Just like dad he dropped a load and dashed to never be seen again

That answers a lot of questions right there.

 

[AKguy]

I have a hunch that the shop did not accurately assess the situation, has not since corrected all the issues and continues to burn through compressors.

 

[bucket]

Or it's a misdiagnosis and the compressors aren't actually failing. Kind of a vague question. Very vague, lol.

 

[AKguy]

Could be that, too!

 

[Doppleganger]

I'd also be changing out the receiver/drier (accumulator) as well.

Soooo.....looks like we wrapped this whole thing up. Another case solved.

lol

 

[AKguy]

Sooooo glad there are only two days of the year where A/C would be nice here!