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1988 928 S4 AC 134a Charge

  • 1988
  • 928 S4
Mileage: 
64 000
Heating and Ventilation
Rehoboth Beach, 
Delaware

Have 1988 928 S4.  Has had 134a conversion.  Would like to be able to top off 134a as seems to have lost colling over time and last fill (full evac & fill) helped but now due for some added coolant.

Any tips on how to get to the low pressure valve?  I can clearly see it but seems almost impossible angle for access. 

 

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