[DML] Re: What temperature should AC be on normal setting?
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[DML] Re: What temperature should AC be on normal setting?

You need 2 cans of freon. With one can only the compressor should be cycling like crazy when the engine revs up.

First can is indeed sucked right in, but the second can can take forever.

Here's a trick I use to speed things up: hold the second can in your hand. As soon as the compressor disengages (which you can force it to do by simply unplugging the clutch power lead), turn the can upside down. Low side pressure at that time will be ~30 psi -- well below can pressure. The can will empty much more quickly as a liquid than as a gas. You don't want to pour liquid freon into the compressor while it's spinning. I can empty a second can in just a minute or two this way.

Normal A/C pulls outside air over the evaporator rather than inside air. It's only useful if temps inside the car are higher than outside temps (after sitting in the sun for example). Otherwise you want to use Max A/C, which recirculates inside air just like your household A/C. 

Also avoid the temptation to use Fan Speed 4 -- the more time air spends in contact with the evaporator, the more heat transfer can take place. 

Bill Robertson

--- In dmcnews@xxxxxxxxxxxxxxx, stevedmc@... wrote:
> Tonight I spent a few hours helping someone flush his AC, put ester oil in the compressor, vacuum it, and then fill it with r134a.  
> To my surprise we were only able to get a little more than one can of 134a in his system before the gauge started reading 40lbs of pressure.  
> He took a drive down the highway and got vent temps of 60 degrees on the normal setting.  Unfortunately the max setting is not working in this car and I only know the max setting gives me a vent temp of 44 degrees.  He has my thermometer so I won't be able to check my vent temp on normal tomorrow.  
> Can anyone share what vent temp they get with r134a in the normal setting?  I just want to know if a 60 degree vent temperature is common on the normal setting.  
> Thanks
> --
> Steve Rice
> #16510


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