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Dave Nova
Dave Nova, ASE Certified Tech
Category: Car
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Experience:  ASE Master Certification. GM World Class Certification
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when adding refridgerant,on low side guage cycles from 25 to 60.

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when adding refridgerant,on low side guage cycles from 25 to 60. Is that to high? did'nt feel any change in temp till about 50 or so.
The change in pressure is due to the a/c compressor cycling on and off. It is cycling due to a low refrigerant charge. Add more refrigerant to the system and the compressor will stay engaged. The pressure should stabilize at around 35 psi with the system fully charged.
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