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Old 05-21-2013, 05:36 PM
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Join Date: Mar 1999
Location: Williamsburg,VA, USA
Posts: 106
w210 99 E320 a/c problems

Not sure what is going on. Initially it blows cold like normal. Then it gradually warms up as the car heats up. Initially thought it was the Duovalve, didn't look too gunky when I cleaned it. 80f day, a/c set to 65, fan on high. What I have is 120psi both sides with the a/c off. Initially comp kicks in, pressure 48-50/210-225 for about 4 minutes, noise from compressor is less, pressures ~85/160 and the inside air blows lukecold until the next cold start. I ran the fault codes, B1234 and FF are in error. Not sure what FF is, but the radiator fan was running full speed. I think 1234 is the sun sensor, car was in the shade, not sure why that would effect anything. I can download actual values tomorrow, ran out of time today.
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