A/C blowing ice cold to warm hot air

Tiny
TAMMYGIRL45
  • MEMBER
  • 2006 PONTIAC G6
  • 3.9L
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
Okay, I just got the car about 3 months ago and it has been fine, A/C was working great I mean cold cold then about 5 days ago about 8 hours from night to day I go start it up to leave turn A/C on and warm hot air blows that's it never gets cool. I've checked the fuses the relay the clutch and the refrigerant all fine I even unhooked battery for a few minutes then hooked it back up to like reset it and I will say now that was one thing when it stopped blowing cold air the temperature only dic panel said -36%f when I did that with battery it now says 73%f. Please help it's so hot.
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Thursday, July 16th, 2020 AT 9:32 PM

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Tiny
ASEMASTER6371
  • EXPERT
Good morning,

What is the Freon pressure? You said it was fine, but I need the high and low side pressures to see if the system has the correct pressure.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Can you see the compressor clutch engage?

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

Disconnecting the battery does nothing at all. It resets nothing. All is does is erase the code memory in the ECM. If there were codes, they will be back.

I attached a wiring diagram for you to view. We need to do some testing to determine the failure.

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

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Do you have a test light or a volt meter to do some testing?

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Roy

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Friday, July 17th, 2020 AT 3:52 AM

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