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A/C blows cold then warm

Tiny
ARAJ
  • MEMBER
  • 2007 PONTIAC G6
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 154,000 MILES
Replaced A/C compressor and 2 days after A/C been intermittently blowing cold then warm. No certain pattern, just does it throughout the day. Sometimes I'll turn off A/C and turn it back on and A/C will blow cold, but after a while will blow be warm again and comes back cold.
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Friday, July 3rd, 2020 AT 7:09 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Did you change the dryer and evaluate the system for about 45 minutes? It sounds like you may have moisture in the system.

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

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

Can you tell me the high and low side pressures while the engine is running? You can rent a set of gauges at a parts store if you do not have a set.

Roy
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Saturday, July 4th, 2020 AT 3:17 AM

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