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AC diagnosis

Old Aug 10, 2010 | 02:01 PM
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Default AC diagnosis

Is there a standard list of steps to follow when diagnosing AC problems?

This is for my sister's '03 Malibu, and the malibu forums look crappy compared to these, so I figured I'd ask here. Basically, the fan works and blows hot air (regardless of the temp setting), and the R134 is charged to like 42 psi on the low side (should be about 50 today).

Ok, so it's not the freon (right?). What to check next?
 
Old Aug 10, 2010 | 05:16 PM
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Here are some excellent articles submitted by a member here, DCFlux:
Air Conditioning Part 1
Air Conditioning Part 2 - Slow Leaks
Air Conditioning Part 3 - Recharging
 
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