Automotive Air Conditioning Information Forum (Archives)

s10project90 on Mon August 16, 2010 1:40 AM

I have a 1990 S10 that I just put a new compressor on. This truck won't blow cold while idling, so I evacuated it, and swapped the white orifice tube out for a Ford Blue one and it still doesn't cool at idle. The guy at Advance Auto parts said he used something called Industrial 12A with the ford blue orifice in his 1989 Blazer. He said it would get so cold, that he had to switch it into vent mode every 10 minutes to thaw the evaporator out. I have done every trick in the book to get adequate cooling with R134A in my truck. Used the ford blue orifice tube, and turned the low pressure cut out switch all the way down. Still sucks. I have never owned a vehicle with such a poorly designed a/c before. Is what this guy saying true?

Edited: Mon August 16, 2010 at 3:17 PM by s10project90

emsvitil on Mon August 16, 2010 2:49 AM

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Ed
SoCal

TRB on Mon August 16, 2010 9:47 AM

Works great for cooking steaks.

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

NickD on Mon August 16, 2010 11:28 AM

Some guy that calls himself Oz discovered if you mix propane with butane, you can almost emulate the temperature/pressure properties of R-12. Well, maybe, maybe not, only over an extremely low temperature range, so they recommend adding air to the system, not just any kind of air, but dry air. Surprised they don't provide that in a can as well at outrageous prices.

You could check on your new compressor warranty if you use other than R-12 or R-134a, may learn you won't have a warranty. Also could check on EPA regulations to learn if you are breaking the law using these HC products. Worse part is that propane does not chemically combine, but only mixes, the least dense will leak out first, fool your safety system, compressor will run dry and seize up. Probably the reason no compressor company will offer a warranty on these blends.

In your conversion, should switch to a parallel flow condenser and an R-134a compatible cycling switch and an accumulator, requires a deep flush, R-134a compatible oil, and means to charge your system without changing hoses or you will get air into your system.

iceman2555 on Mon August 16, 2010 6:24 PM

Quote
The guy at Advance Auto parts said he used something called Industrial 12A with the ford blue orifice in his 1989 Blazer. He said it would get so cold, that he had to switch it into vent mode every 10 minutes to thaw the evaporator out. I have done every trick in the book to get adequate cooling with R134A in my truck.

Pardon the French...but 'Bullchit". If this 'yesterday burger flipper...today I'm a AC xpert' can achieve this type cooling...he should shuck the AAP and work for one of the major's. Make a bunch more bucks...get bailed by Obaman...have great job security....and all that other stuff. Sure hope the compressor was purchased at Advance......should be one of those 'multi seasons units.....

Statement was that 'every trick' in the book had been tried....how 'bout some basic AC technology, the correct repair procedure.....the correct amount of refrigerant....lube.....engine cooling working properly.
Why not post about exactly what 'every trick' is...pressure readings...temp readings...and let's see what happens......never was a 'fan' of the Ford in GM thing.....the OE GM has always worked in the past.

By the way, if he must turn the system off every 10 minutes....simply means his system control devices are not functioning properly......heck...can do the same thing with 12 or 134a......

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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 Mon August 16, 2010 11:34 PM

Ice, sometimes one has to ask. Is this really a person looking for repair advice or someone selling Propane.

If they are looking for repair advice they will respond to your questions on what has been done and so on!

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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 Tue August 17, 2010 9:17 AM

TRB, understand the time of the year and the 'gas' pushers. Seems a little 'gas' is the answer to all our AC problems. Heck, think next time a call is received concerning performance....shall refer to this post and inform the caller that a little 'gas' will solve all his performance issues.
Hope you all have a great day!!!!!

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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