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The A/C is not working?

Tiny
POPERANDY
  • MEMBER
  • 2012 HYUNDAI SONATA
  • 1.7L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 174,000 MILES
It has a compressor running but it is not cold I pulled a vacuum on it and recharged it with a 1.7 lbs. Of 134 and not cold low side gage reading is 10 and high side is 100 it makes me think that the pressure valve or the compressor is bad, what do you think?
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Tuesday, August 1st, 2023 AT 10:55 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,968 POSTS
Thanks. Yes, 10 PSI on the low and 100 PSI on the high side means the system is not full. Please go over this video and guide to see what I am talking about:

https://youtu.be/4EqdrBVb0sY

and

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Fluid Types

Refrigerant
Type .................... R-134a
Capacity .................... 19.4 ± 0.88 oz. (550 ± 25g)

Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Tuesday, August 1st, 2023 AT 2:05 PM

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