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Old 10-26-2011, 11:57 PM   #8
Nervous
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Join Date: Dec 2010
Location: MD, USA
Posts: 1,486
My Ride: 01 330CI 6MT ZSP EU3
Update.
I checked pressures when engine is off for 2 hours. In theory, they should be equal. Here what I saw:


Not equal, 84 psi vs 137 psi. And it was slowly changing: low side was growing, high side was falling. But very slowly, around 1 psi in 2 min.

Is it abnormal? I am leaning to the obstruction theory (in condenser, dryer or expansion valve) rather than faulty pressure sensor. I'll check pressures tomorrow morning before starting the car too. Stay tuned (and chime in!).
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