Low reading on high side during recharge

2005 GMC TRUCK
175,000 MILES • 8.1L • V8 • 2WD • AUTOMATIC
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JWS1988
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  • 2 POSTS
Evacuated the system after changing compressor orifice,and drier. started charging the system but high side never went past 48 lbs. flushed condenser. Still same.not sure of my next step.
Aug 10, 2019 at 8:58 PM
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94 TRANSAM
  • ✓ASE Certified Mechanic
  • 680 POSTS
  • ASE Certified Mechanic
Hi and welcome to 2CarPros. Lets see what we can do to help you out.

As this is an unusual issue my first suggestion would be to test your gauges on another car and see if they read correctly. If they do, is your static pressure at at least the minimum for the system to operate? If that is yes, Is the clutch cycling?

Check these out and let me know what you find. Thanks ,Rich
Aug 11, 2019 at 2:02 PM
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JWS1988
  • MEMBER
  • 2 POSTS
I checked my gauges which are accurate. But my high side connector is not working properly.if i push it on real hard i get a higher reading.So it is a manifold malfunction.thanks for your help
Aug 11, 2019 at 2:21 PM
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94 TRANSAM
  • ✓ASE Certified Mechanic
  • 680 POSTS
  • ASE Certified Mechanic
You bet! I had a feeling that is what it was.
Aug 11, 2019 at 3:34 PM
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