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Compressor Quality

JW on Fri April 10, 2009 1:14 PM User is offline

Year: 1995
Make: Chevrolet
Model: Lumina
Engine Size: 3.1L
Refrigerant Type: 134a
Country of Origin: United States

Need to replace the compressor in 1995 Lumina sedan, 3.1L, leaking at the case and bearing is noisy. From what I have read so far a new compressor is best. Looking around there is a wide range in prices, even within the same manufacturer. What is all of your opinions on which replacement is best, dealership, Delphi, AC Delco, Ready Aire, Four Seasons, NAPA Cold Compressor? Is the Delphi aftermarket unit the same as what you would get at the Chevrolet dealership?

Thanks to the forum owners and thanks for the replies - have learned a lot.

TRB on Fri April 10, 2009 1:31 PM User is offlineView users profile

Delphi not listed on our website but available. Item # 20-10671-H $ 312.00 plus freight.

Aftermarket is fine also depending on supplier.

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HECAT on Fri April 10, 2009 1:45 PM User is offline

There is no way of knowing if all of them are offering the same unit, new or reman, in all those boxes and charging all those different prices. Even the dealer is going to supply you one from the aftermarket, it is a 14 year old car, right?

I would go with the forum host here. They have years of experience dealing with this exact issue, use the products themselves, and stand ready to back up their chosen products reputation here at the forum they provide.

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GM Tech on Fri April 10, 2009 2:53 PM User is offline

I highly recommend the Delphi unit--

Your scenario are the ones I reseal- new orings, new shaft seal and new pulley bearings....So I tend to never buy new ones anyway.....

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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......

iceman2555 on Sat April 11, 2009 1:11 PM User is offlineView users profile

In this day, it is almost impossible to detect who or what company produces what products for each label.....just like this quote makes not sense at all.
Anyway....know that Delphi makes very little of their own any more...most is 'farmed' out to various manufactures....or...even.....worse (as some may believe) comes form 'off shore'.
AC Delco is a major importer of 'off shore' items...however, it should be noted that they do exercise production control over many of these products. At one time 4S was manufacturing one of their new compressors....this may not have changed.
Ready Air does not manufacture 'new compressors' but purchase from various sources. 4S does manufacturer some new compressors, but most are purchased from various sources. NAPA ColdPower units for this vehicle are manufactured in the 'good ole USA'.....down in Dallas TX. This compressor is a 'clone' for the GM "H" series. If your vehicle has a 'V' series compressor it is a good chance that it is made by the same company that produces the Delphi unit.
All that being said....the quality of a compressor repair rest more with the quality of the preparation of the vehicle for the new compressor that the quality of most new compressors. Failure to properly clean, lube and most important recharge the system will result in a compressor failure....no matter who made the darn thing.
Charging the system is a most important and most overlooked aspect of the repair. Simply introducing refrigerant into the system unit certain pressures are derived is not a good indication of a properly charged system. Most compressor are designed to operate within a certain undercharged limit (lube flow) but once that limit is breached...the unit will fail. An undercharged system of 5-10% may result in a compressor longevity problem.

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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 April 11, 2009 3:52 PM User is offlineView users profile

Ice I think some of the imports are a great value. Just need to know the supplier is putting the effort in to import quality stuff which can be said for buying anything anymore.

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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 April 11, 2009 6:56 PM User is offlineView users profile

Agree with the import quality. Almost like the old Sears sales philosophy....GOOD>>>>BETTER>>>>BEST !!!!
Some of the imported stuff is not worth the time necessary to set up the test stand. However, some of it is fantastic....esp those that are made for the OE suppliers.


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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 April 11, 2009 7:50 PM User is offlineView users profile

I hear stories all the time from each supplier claiming this and that. I can only base my opinion on what I see in the real world. Overall our suppliers import line lasts as well as any US made compressor. Which is not bad overall as I truly think many DIY repairs are on par with many professional shops that are not willing to use the equipment we both know really should be used to remove debris.

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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 Sat April 11, 2009 8:43 PM User is offline

Agree with all the above- except the original poster doesn't need to clean out his system- since he has a loss of charge due to compressor case seal leak-- his pump has not trashed the system (OT check will confirm) - so he doesn't need to flush for debris- if he wants to be dead certaini on the amount of oil in the system - then he can flush to rid the system of the old oil-- but in general there is no reason to flush when the original failure mode is a leak....His particular V-5 compressor, if bought from Delphi- is produced by Delphi- either old stock from US or their Delphi plant in Korea- Delphi still makes their own H series compressor in Juarez- so it is not farmed out- the only farmed out Delphi unit is the R-4 - made by Compressor Works.

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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......

TRB on Sat April 11, 2009 8:49 PM User is offlineView users profile

GM that's kind of my point. You list the Delphi being assembled in Korea and Mexico. In my book those are imports!

As for the CW R4, well I just want mine from tool set A!

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


Edited: Sat April 11, 2009 at 9:29 PM by TRB

GM Tech on Sat April 11, 2009 9:08 PM User is offline

Well then, with that said- the Ford Focus, Mercury Milan (MX), the chevy suburbans (MX), the Grand Prix (Canadian), Chrysler PT Cruiser (MX), Chevy HHR (MX) and many more are all imports as well- but are all engineered in US....just assembled where the labor is cheaper- I don't like it either, but what the government has forced the industry to do...The H-6 compresor being built in MX is off the same equipment used in US- was moved there 2 yrs ago...being managed by US managers who live in El Paso and drive over the border every day to work in Juarez....to get the cheap labor to assemble the pumps.....

-------------------------
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......

TRB on Sat April 11, 2009 9:29 PM User is offlineView users profile

I always asked, is my Toyota Tacoma any less American being assembled in California comapred to the Ford F150 which had mostly made in Mexico parts on it.

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

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