AC Low Side Pressure TOO High...

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  #16  
Old 05-07-2006, 08:08 PM
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the outside temp is 71
 
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Old 05-07-2006, 08:13 PM
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If the engine is warm then pressures will be higher. The static pressure shouldn't concern you. Whats it do when the compressor comes on?

Dick
 
  #18  
Old 05-07-2006, 08:25 PM
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cycles on and off then stays on. the air is nice and cold..when i hook up a psi press. meter on the low side it says 25 psi and i can add a whole can in there and it still doesn't move
 
  #19  
Old 05-07-2006, 08:29 PM
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Its not supposed to if its already full.You have to be carefull not to over full. Check the big line into the compressor if it gets cold then the system is full. I would be carefull not to over fill the system. Those pressures sound like its running good. Any other concerns?
 
  #20  
Old 05-07-2006, 10:35 PM
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to do it right, you need to recover all the gas in it, pull a good vacuum, then weigh in the amount as specified by the mfg.

guess charging a small system is tricky.

Bill
 
  #21  
Old 05-07-2006, 10:45 PM
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When you test the vent temps, what should the fan speed be? Mine seems to work great on the first two speeds, but doesn't get as cold on the third or fourth setting. It will get down to 44-47* on the lower speeds and only 53-58* on the higher two speeds. Ambient temps between 85-95*

SA told me recently that Ford's specs for A/C performance was fan speed on lowest setting(don't know if this is true.)

My whole A/C system is basically new, new compressor/accumulator/orofice tube/various other hoses, o-rings, ect... Courtesy of Ford(warranty) I will occasionally see vent temps of 60* with Max A/C and fan on high.

I'm not sure if it's working properly or if something is still wrong. I know it's a big cabin, but it doesn't get nearly as cold inside as the wifey's Maxima.

Thanks for the help,
Jay
 
  #22  
Old 05-07-2006, 11:00 PM
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The more air the fan pushes across the coil, the amount of the heat exchanged increases, making the air warmer out of the vents. The slower the air moves, less heat exchanged, causing cooler temps.I would say your A/C is working normally.When you see the temps ocassionally at 60, the compressor could be cycled off at that time, you should see the temps drop back down.
 

Last edited by G'sRed99F150; 05-07-2006 at 11:03 PM.
  #23  
Old 05-08-2006, 11:30 AM
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thanks you guys!! for all your help
 
  #24  
Old 05-08-2006, 01:09 PM
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That what weez hea 4..


Dick
 
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