A/C gauge fluctuates when connected to low pressure valve

2003 FORD EXPLORER
185,741 MILES
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AWONG15
  • MEMBER
  • 1 POST
So when I connect the gauge to recharge the A/C it fluctuates from low to the green then back to low after already adding coolant. Why is my A/C still blowing hot air?
Feb 18, 2020 at 5:11 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good afternoon,

Was the system totally out of Freon? If it was, you need to add exactly what the system calls for.

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

If you are topping off, you have to be careful not to overfill it.

Can you post a video of what you see with the gauges?

Roy
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Feb 18, 2020 at 5:48 AM
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