No pressure in the low side of the air conditioner

2008 BUICK LUCERNE
100,000 MILES • 3.8L
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COWBOYAL
  • MEMBER
  • 1 POST
No cold air from conditioner. When engine running and compressor clutch is turning I have no pressure in the low side of the system. When engine is stopped I then show normal pressure in the low side. What may be the reason for these pressures?
May 1, 2019 at 5:21 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good afternoon,

What are the high and low side pressure with the engine off?

When it is running, what is the high and low side pressure?

Are you sure the clutch is engaged?

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

Roy
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May 1, 2019 at 7:15 AM
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