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2009 Chevy Aveo A/C problem

sanderson231 on Sun May 06, 2012 9:18 PM User is offline

Year: 2009
Make: Chevy
Model: Aveo
Engine Size: 1.6L
Refrigerant Type: r-134a
Ambient Temp: 90
Pressure Low: 80
Pressure High: 150
Country of Origin: Korea, Republic of

Yesterday the A/C was ice cold. Today nothing. I checked pressures with engine off but hot. High side was 110 psig and low side was off-scale high (max gauge reading of 100 psig). I started the engine and then turned A/C on. Clutch engaged and compressor was turning. Compressor not making noise. Low sidecame down to 80 psig with about a 5 psig flutter and high went to 150 psig with a slight flutter. The Aveo has a V-5 compressor with an expansion valve. Is it possible the expansion valve failed open or am I looking at a new compressor?

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