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

Tiny
ANGELA KIEFER
  • MEMBER
  • 2015 KIA SORENTO
  • 0.5L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 93,626 MILES
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.
Sunday, August 6th, 2023 AT 1:27 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
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.
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Monday, August 7th, 2023 AT 11:56 AM

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