A/C blows cold then warm

2007 PONTIAC G6
154,000 MILES • 3.5L • 6 CYL • 2WD • AUTOMATIC
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ARAJ
  • MEMBER
  • 1 POST
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.
Jul 3, 2020 at 7:09 PM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 52,796 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
Jul 4, 2020 at 3:17 AM
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