A/C system not working properly

Tiny
CONECT11@AOL.COM
  • MEMBER
  • 2005 CHEVROLET EQUINOX
  • 165,000 MILES
So I just bought this vehicle listed above, and have an issue I have not been able to find an answer to yet. On the lowest two fan settings the A/C light turns on if I press it, but I can't hear the fan at all, which might simply because of how low the setting is. However, if I set my fan to high, or even the speed just below high the air conditioner button will not come on at all, but the fan definitely works. At no time does cold air blow out. I tried to add refrigerant to it, but it doesn't seem to have worked.
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Monday, June 8th, 2020 AT 5:45 PM

9 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good morning,

Do you have gauges to test the pressure in the system?

I attached a wire diagram for you to view for the blower motor. Do you have a test light for some checks?

https://www.2carpros.com/articles/how-to-check-wiring

Roy
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Tuesday, June 9th, 2020 AT 4:15 AM
Tiny
CONECT11@AOL.COM
  • MEMBER
Thanks for the reply.

I have the gauge. It never read low at all, just filled and "see instructions."
Picking up a test light today. First time using one.
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Tuesday, June 9th, 2020 AT 5:28 AM
Tiny
ASEMASTER6371
  • EXPERT
I need the high and low side readings on the A/C system.

Let me know so we can do some checks.

Roy
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Tuesday, June 9th, 2020 AT 5:42 AM
Tiny
CONECT11@AOL.COM
  • MEMBER
Hey Roy,

So I ran the car today and all of a sudden the air conditioning seems to be working. The light comes on at every setting now, and my thermometer is reading 70 . Maybe I just needed to run it for a little while after I put Freon in it? Admittedly after I charged the system yesterday I didn't let it run for a while, because I had to do something else. Maybe that was the problem.
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Tuesday, June 9th, 2020 AT 9:52 AM
Tiny
ASEMASTER6371
  • EXPERT
Okay, keep an eye on it and let me know if you have further issues with the A/C system.

Roy
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Tuesday, June 9th, 2020 AT 10:29 AM
Tiny
CONECT11@AOL.COM
  • MEMBER
Yeah, I spoke too soon.
So it'll work, sometimes, with a steady A/C light. Other times the A/C light will blink, then go out.
I did go ahead and change the fuse. No change.
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Tuesday, June 9th, 2020 AT 2:49 PM
Tiny
ASEMASTER6371
  • EXPERT
Okay, back to the gauges. I need those readings now.

Roy
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Tuesday, June 9th, 2020 AT 2:53 PM
Tiny
CONECT11@AOL.COM
  • MEMBER
We'll have to get back to you. I just realized that the gauge that I have is from a refrigerant refill kit, I believe it only fits on the low pressure side.
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Tuesday, June 9th, 2020 AT 2:57 PM
Tiny
ASEMASTER6371
  • EXPERT
That is not accurate.

You need a set of gauges that has both the high and low side readings.

Roy
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Tuesday, June 9th, 2020 AT 3:09 PM

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