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Compressure Failure and metalic flakes

danders on Thu September 03, 2009 1:11 AM User is offline

Year: 1999
Make: Honda
Model: Civic
Engine Size: 1.6L
Refrigerant Type: 134A
Ambient Temp: 85
Pressure Low: 185
Pressure High: 42
Country of Origin: United States

My AC stops working, and when I check the compressor it is frozen solid and I can't turn the rotor by hand. When I take the system apart, I find that there is no oil in any of the components. I've owned the car for about a year, so I concluded that the previous owner did not have the AC serviced properly. I get another compressor, but before I install it I flush all the components and replace the drier. While flushing the condenser, I flush out a lot of metallic flakes, which explains why my compressor failed. The evaporator is flushed and I find more metallic flakes it in it also. The lines were also flushed.
I vacuum the system and charge it up. The system works great, for 3 days, after which my compressor fails again. This time the compressor housing has a hole in it the size of a baseball.
I concluded that I must not have flushed out all the metal flakes, leading to another compressor failure.
My question is: Should it attempt to flush the condenser and evaporator again, or is it just too difficult to remove all the metal flakes, especially from the condenser? I thought I had gotten it all out the first time, but apparently I did not. Or do you recommend that I replace the compressor and evaporator?
Second question: Where do the metallic flakes come from?
Thanks for your opinions.

mk378 on Thu September 03, 2009 7:41 AM User is offline

The flakes are from two or three blown compressors. It is not very expensive to buy the whole system compared to buying yet another compressor. Replace the condenser for sure. You'd need to remove the evaporator (a simple job on these cars) to flush it anyway, I'd put a new one in instead to be sure it's clean.

HECAT on Thu September 03, 2009 11:02 AM User is offline

Sound like a scroll compressor failure with the mention of the hole in the side of it. System is packed with metal again. Scroll failures will produce an unusual large amount of metal debris.

Replacement scrolls need a very clean system to survive. It does not take much being missed to create these repeat scroll failures.

It will take some professional flushing equipment that is capable (in combination with diligence and verification processes), or component replacement; to achieve the cleanliness required.

Almost good enough does not work, as you have experienced; it must be "squeaky" clean or new, there is no other option.

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FLUSHING TECHNICAL PAPER vs2.pdf 

TRB on Thu September 03, 2009 11:24 AM User is offlineView users profile

FLUSHING TECHNICAL PAPER vs2.pdf

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