A/C will run for about 20 minutes, then will stop, or barely blows out any air?

2015 KIA SORENTO
93,626 MILES • 0.5L • 4 CYL • 4WD • AUTOMATIC
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ANGELA KIEFER
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I have had my blower motor and resistors replaced. I've had it in the shop approximately seven times and each time they just keep changing the blower motor and resistors. Obviously, this isn't the issue. What do I need to have looked at? Please help. I'm a single mom and can't keep putting my car in the shop and get the same runaround over and over.
Aug 6, 2023 at 1:27 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Yes, this happens because the A/C is a little low on refrigerant. When the low side pressure is too low it will freeze up the evaporator causing the problem you are describing. Please go over this video so you can see what the pressure should be, and you can tell your shop what the problem is.

https://youtu.be/4EqdrBVb0sY

Please let us know how it goes.
Aug 7, 2023 at 11:56 AM
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