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2005 H2 AC Compressor

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  #11  
Old 07-25-2023, 06:08 PM
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okay.....after replacing compressor, accumulator , condenser , ...cleaning all the lines and a vacuum and recharge....also cleaned out the evap core..which was very dirty !!.....now my issue is i have very cold ac at idle sitting still...i mean on a 92 deg day it will get in the high 30's at the vent....the issue i have is if i start to drive down the road...the temps out of the vent go up to 52-55 .....not sure why that's happening
i also replaced the fan clutch .....i recalibrated the actuators and all that seemed to work just fine....all of this is happening with the temps set at 60 and not on auto....not sure if its an air flow issue across the condenser or what.....any ideas are appreciated....
 
  #12  
Old 07-25-2023, 08:09 PM
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did you replace the orofice tube in the line and pull a vacuume?
 
  #13  
Old 07-26-2023, 06:01 AM
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yes...forgot to mention that....i did replace the orifice tube and pulled a vacuum
 
  #14  
Old 07-26-2023, 10:06 AM
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did you put in 1.2 pounds of refrigerant?
 
  #15  
Old 07-26-2023, 12:21 PM
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no...i put 1.6 lb in the system.....got that info from a gm bulletin

Document ID# 759766 2005 HUMMER H2 Refrigerant System Capacities Application Specification Metric English PAG Oil GM P/N 12378526 for United States PAG Oil GM P/N 88900060 for Canada Accumulator Replacement -ml* -oz* • *Add 60 ml (2 oz) of PAG oil, plus the equal amount of oil drained from the accumulator. Compressor Replacement 60 ml 2 oz • The Denso replacement compressor is precharged with 237 ml (8.0 oz) of PAG oil. Condenser Replacement 30 ml 1 oz Evaporator Replacement 90 ml 3 oz If more than the specified amount of PAG oil was drained from a component, add the equal amount drained. • Total System PAG Oil Capacity 210 ml 7.1 oz R-134a • Refrigerant Charge 0.7 kg 1.6 lb
 
  #16  
Old 07-26-2023, 05:07 PM
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weird. that amount sounds like it might be to a gm that has a rear climate zone. 2008 or 9 maybe?
is your high side reading over 275 psi?
 
  #17  
Old 07-27-2023, 05:03 AM
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High side is reading around 235-245.....
 
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