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1997 GMC Truck AC air warm

Tiny
BUELLGUY
  • MEMBER
  • 1997 GMC TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 165,000 MILES
System holds 27in Hg of vacuum after 30 min. Of evacuation and In trying to recharge low and hi side pressure are 60psi low & 120psi hi when compressor is engaged & 90psi low & 70 hi when not, Line going to evaporator is warm when compressor is not engaged and cool when is it possible that orifice is plugged also causing back pressure @ hi side service port?
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Tuesday, July 20th, 2010 AT 9:18 PM

1 Reply

Tiny
DR LOOT
  • MECHANIC
  • 2,311 POSTS
What do you mean by "causing back pressure @ hi side service port?" And I will ask you one more thing why did you evacuate the system? Did you have a malfunction with the compressor? What went wrong in the system begin with.
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Wednesday, July 21st, 2010 AT 12:56 AM

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