2005 Jeep liberty AC high pressure reading on the low side of the gauge?

Terry Steward

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Jun 18, 2022
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I am rebuilding my AC system, new compressor, new lines, new condenser, dryer and new electric fan .
Pulled a vacuum and recharge with 20 oz 134a freon. AC blows slightly cooler but my gauge readings are running strange. My low pressure gauge readings are off the scale.
What is wrong?
 

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