Too much pressure on low side

Tiny
MADHATT94
  • MEMBER
  • 2001 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 2WD
  • AUTOMATIC
  • 167,232 MILES
My SUV doesn't want to take any Freon, one can jumps up the pressure to 70PSI, compressor, condenser, accumulator, expansion valve, orifice tube have all been replaced and system flushed. Not sure if high/low pressure switches need to be replaced, or having another issue. When I flushed the lines I put A/C flush in one side and it came right out the other. So not suspecting a plug anywhere, and old expansion valve and orifice tube looked decent, no particles or shavings. Just trying to figure it out before summer comes around.
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Saturday, April 6th, 2019 AT 3:36 PM

1 Reply

Tiny
ASEMASTER6371
  • EXPERT
Good evening,

Does the AC compressor come on when you command for AC?

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

What is the high and low pressure readings with the engine off?

Roy
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Saturday, April 6th, 2019 AT 8:13 PM

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