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New RV2 problem

v194 on Thu June 05, 2008 9:21 PM User is offlineView users profile

Year: 1970
Make: Plymouth
Model: Barracuda
Engine Size: 340ci
Refrigerant Type: R12
Country of Origin: United States

Installed my rebuilt RV2 compressor (purchased NEW in box) from an Ebay vendor and replaced both my expansion valve and drier from AMA and pulled a vaccume on the whole system and it held fine so I started with the R12 and the compressor is not compressing. The high side is doing nothing.
Is the Compressor bad or did I do something wrong? My mechanic said the compressor is bad.
The system was tested for blockage and concluded there was no problems and the system is totally clean and clear.
The entire procedure described above was done by an experienced and certified ASE mechanic.
Its my car so Im just relaying the problem.
Advice?

mk378 on Thu June 05, 2008 9:51 PM User is offline

new, rebuilt, ebay?

Did these have isolation valves at the compressor? Make sure they're open.

You can disconnect the compressor and hold your thumb over the discharge port, turn it by hand and see if air pressure builds up.

v194 on Thu June 05, 2008 10:58 PM User is offlineView users profile

Thanks the unit is a new unit to me but is a rebuilt unit.
Not sure if the unit has an isolation valve? or what that is?

Dougflas on Fri June 06, 2008 5:24 AM User is offline

Did you install the EPR valve at ther suction port? Ity is a cyclinder shaped assy that is approx 1 in in diameter and 2 1/2 inches long.

v194 on Sat June 07, 2008 12:28 AM User is offlineView users profile

Yep! I transferred everything over when I replaced mounted the rebuilt unit?
The only thing wrong with the old unit was bad seals so I was hoping to start out with a fresh unit.
It just does not seem to compress at all, puzzled.

TRB on Sat June 07, 2008 2:37 PM User is offlineView users profile

Contact Mr. Ebay and have them give you a replacement compressor.

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

iceman2555 on Sat June 07, 2008 3:08 PM User is offlineView users profile

That was just plain nasty!!!!!! Have a heart!!!!
Right now am running 50% with ebay purchases...one good...one not so good....like buying things I can get my grimy fingers one.....feast my eyes upon it.....and have a person to 'bitch' at when it does not work......at times a penny saved.....is a penny dropped in the toilet....right after.....well....think ya get the picture

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The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

TRB on Sat June 07, 2008 5:19 PM User is offlineView users profile

Was not meant to be a nasty comment. If it were a dead compressor from my company. I would have said send it back. I have done just that in the past on this forum. So what we aren't supposed to say contact Ebay because of why exactly?

Since you brought it up. I know of companies in this industry unloading old out dated compressors on Ebay. But since there is a place to get a few bucks they use this resource. You claim to have a 50 percent failure rate. I'll just say good thing Mr. Ebay does not have a forum such as this. Mr. Ebay would be destroyed with a 50 percent failure rate! So I guess it's a good thing Mr. Ebay can run and hide or create a new Mr. Ebay account when needed.

-------------------------

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

v194 on Sun June 08, 2008 9:14 PM User is offlineView users profile

I doubt this is the member off Ebay i bought this unit from. I may have said the unit was unused in the box marked for Car Quest a nation Cain of auto parts stores. The unit was sh rinked wrapped and it had all of its papers and gaskets. Of course without a receipt they will not honor any type of replacement at my local store.

I emailed Mr Ebay and as of yet no response. he is located in Grand Prairie Texas and his Ebay id is aps406

v194 on Thu July 17, 2008 11:17 PM User is offlineView users profile

Well I get an entire new unit (rebuilt) from a local re builder and start all over again.
This time there appears to be the same problem, nothing on the high side. Does the EPR valve have anything to do with this>
This unit held 30 inches of vacuum for over 24 hours so there appears to be no leaks but I cant figure out what could be causing the high side not to compress?
Any ideas.

When the car is running and the compressor is not engaged (clutch not running) there is smoke coming out of the compressor clutch. Now if it holds such great vacuum there cant be a leak in the front seal can it?

Any help will be appreciated this is my 3rd compressor!

GM Tech on Fri July 18, 2008 8:12 AM User is offline

Are these valves what you have on top of your compressor- if so make sure you know how to open, close, use them-----






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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......

Edited: Fri July 18, 2008 at 8:13 AM by GM Tech

v194 on Fri July 18, 2008 10:00 AM User is offlineView users profile

Nope. Your photo is of a completely different compressor.
I have an RV2 style

v194 on Mon July 21, 2008 9:00 PM User is offlineView users profile

I guess its a mystery?

powerflite on Tue July 22, 2008 5:11 PM User is offline

Remove the Inlet and outlet fittings and the EPR valve, then turn the compressor by hand and see if it is pumping. If not, one or more of the valves is bad or a compressor head gasket is leaking badly. New valve plates are available and they can usually be changed without removing the compressor. Don't forget to buy new gaskets. Good luck!

v194 on Sun August 03, 2008 3:07 PM User is offlineView users profile

OK found out that the EPR valve was sticking not allowing any pressure to build. I took care of that filled it up and set out for a test drive.
Now the best outlet temp I can get at the dash is 86 degrees with an outside temp of 90 degrees and 44% humidity.
Just to recap I have replaced just about everything but the condenser but that is in great shape and I have not replaced the clutch?
It holds 30 inches of vacuum for over 24 hours.

What I look for next as a possible problem with this system?

I forgot to add the smoking problem mentioned above was from a short shaft which allowed the clutch to barely rub on the compressor itself. Seems when they rebuilt this unit the shaft was too short. So I again replaced the compressor.

Edited: Sun August 03, 2008 at 3:10 PM by v194

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