The A/C just stopped blowing cold air the next day without warning?

Tiny
EQUIN0X13
  • MEMBER
  • 2013 CHEVROLET EQUINOX
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 125,000 MILES
I placed a can of 134a with a gauge on the low-pressure port. The gauge read 35 and the color indicated the system was “Filled”. The low-pressure line was ice cold to the touch. The compressor pulley was turning, and the car’s rpm changed when the A/C was turned on (like the other times, nothing unusual).

A couple of months ago the drain plug was clogged to the point we could hear the condensation hit the coil fan when turning left (or right, I don’t remember). Cold air continued to come out before and after the drain plug was cleared.

Thanks for your help.
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Wednesday, August 24th, 2022 AT 5:35 PM

5 Replies

Tiny
KEN L
  • ADMIN
So, is there air coming out of the vents just not cold or is there no air from the vents? If no air is coming out, then 9 times out of 10 the blower motor has gone bad, but this guide can help you test the power and ground to confirm the issue also, I have included the blower motor location in the images below.

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

If the air is coming out of the vents okay, then the temperature control actuator is having a problem here is how to replace it and calibrate it.

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Thursday, August 25th, 2022 AT 12:10 PM
Tiny
EQUIN0X13
  • MEMBER
Hello,

Thank you for the reply, the air does come out of the vents, and you can hear the change in tone when the A/C is turned on. Still no cold air, just warm air. Fan Switch works just fine and can control fan speed.
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Thursday, August 25th, 2022 AT 2:09 PM
Tiny
KEN L
  • ADMIN
Okay, this is a temperature blend door actuator problem, here is the part that needs to be changed with the calibration instructions, let me know how it goes.
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Friday, August 26th, 2022 AT 12:02 PM
Tiny
EQUIN0X13
  • MEMBER
Hello,

I replaced the blend door actuator, and it fixed the problem. I have cold air in the cabin again. I pulled out the cabin air filter while working in the area and discovered a mouse had moved in and buried the filter with insulation. I cleaned it all up, including the blower motor. I now have cold air coming out at a faster rate. Thank you for your help.
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Friday, August 26th, 2022 AT 6:51 PM
Tiny
KEN L
  • ADMIN
Nice work, we are here to help, please use 2CarPros anytime.
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Saturday, August 27th, 2022 AT 11:56 AM

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