X5 E53 Air Conditioning - all systems go but no cold air
I have a 2004 BMW X5 E53 with no cold air when A/C is turned on.
1. I have had the system vacuumed and refilled
result: a hint of cold for a few minutes but then just ambient 80 degree air
2. ODBII - no faults
3. Compressor clutch engages and condenser fan works
4. Low pressure line was high on 1st canned R134a gauge check
Question: how would I determine if the issue is the Expansion Valve?
*NOTE: I have not tested with PSI hi/lo gauges yet
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