V-5 compressor refrigerant control valve

sanderson231 on Tue May 29, 2012 11:53 PM

Year: 2009
Make: Chevrolet
Model: Aveo
Engine Size: 1.6L
Refrigerant Type: R-134a
Ambient Temp: 90
Pressure Low: 80
Pressure High: 150
Country of Origin: Korea, Republic of

Where can I find the refrigerant control valve aka RCV aka pressure control valve for the V-5 compressor on this car. The dealer says it is part of the compressor. I have found one company in China that sells the seven different versions of the valve with different set pressures. They are said to fit all years and work with a Daewoo which it what the Aveo really is. Shipping from China is close to $40 and although they say they are ISO9000 certified there always the specter of chinese junk. Is there another source for this valve?

TRB on Wed May 30, 2012 12:58 AM

We carry many of the different control valves. Just need to know the color.

http://www.ackits.com/merchant.mvc?Screen=CTGY&Store_Code=01&Category_Code=CompressorControlValves

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

GM Tech on Wed May 30, 2012 6:46 AM

The compressor is a Delphi V-5- not a Dawoo-- I would not count on them crossing over---BTW why do you think it is bad? Just curious, I see about 1 bad one every five years.

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

sanderson231 on Wed May 30, 2012 1:26 PM

Quote
Originally posted by: GM Tech
The compressor is a Delphi V-5- not a Dawoo-- I would not count on them crossing over---BTW why do you think it is bad? Just curious, I see about 1 bad one every five years.

I know V-5 is originally a Harrison design. The comment on the Chinese webpage regarding RCV's I interpret as meaning the Daewoo uses a standard V-5 compressor.

"Why do I thinks it bad?"

1) A/C went from blowing 40 'F to close to ambient overnight
2) Clutch engages and compressor spins
3) No noise from compressor
4) I can turn compressor by hand and it turns freely - no feeling of it binding
5) Low side presssue is 80 psig and high side 150 psig. If system was short of charge, low side would be at control point of RCV.
6) I can imagine the bellows on the RCV fatigueing and failing instantaneously. I have a harding time rationalizing an instantaneous compressor failure especially with no noise.

GM Tech on Wed May 30, 2012 4:54 PM

The number one diagnostic aid--How much refrigerant did you recover? You may have a big leak...

Responses 2,3,4 are no big deal---on a V-5 - at no stroke, there is little resistance. and it will run as long as there is at least 4 oz (40 psi) in the system

That 80 psi suction may not be true-- be careful- prove to yourself it is real- 80 psi just happens to be a static reading as well-- so your gage may not be communicating with your system-- your port may not be opening with valve depressor...

80 suction psi and 150 discharge are rare combinations-- I would expect a failed control valve to be more like 80 and 90--- so it is stroking somewhat to get that 150.

pull the charge and weigh it as your first step if you haven't already.

I just don't see very many control valve failures.....

-------------------------
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

sanderson231 on Sun June 10, 2012 12:08 AM