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Old 06-09-2016, 10:43 AM
dhake2 dhake2 is offline
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Join Date: Jan 2005
Posts: 16
1999 E300 AC question

I hope the W210 AC guru's can help me fix my AC. Last fall, my compressor failed so I bought and installed a new compressor, condenser, dryer, expansion valve and comp-cond hose, cond-dryer hose and dryer-evap hose. I flushed the evaporator and hose then I poured out oil from new Denso compressor and added 8oz of new oil to compressor and charged the system. The system works when the outside temps are in the 70's but stops working when temps get hot. The fans are working. I am not throwing any codes and don’t recall what my gauges where reading (I can re-check this weekend) but am fairly certain the system is shutting off due to high-side pressure getting too high. The compressor is kicking on and off. The #7 sensor cycles from 23-30. I had a reputable shop flush the system fearing some particles didn’t get flushed from evaporator and clogged the expansion valve. The system is still not working when temps get warm outside. Could I have too much oil in the system? Any other ideas???
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