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auto air conditioning?
i have a 1985 mercedes 380 se.iput a new ac compressor on and a new dryer.also new suction lines.filled it with freon and it wont coll down. still has plenty of freon.there is a bluel line looks like high pressure.from the dryer thru the dash can any one tell me is that line supposed to get cold with the air on.before i changed every thing it did in fact it frose up.where you put the freon in the suction line is very cold.any help will be appreciated.thank you.
4 Answers
- R-UNutsLv 51 decade agoFavorite Answer
If the system was not evacuated to remove all the air in the system is a problem, air will compress but wont condense and turn to liquid like the freon. any air in the system will hurt the performance. It also could be your 'expansion" valve is plugged. You will have to check with the dealer or a good A/C shop to find where the expansion valve is located in your system. But if you didn't evacuate the system i would try this first, you will have to dump the charge to then place the system into a deep vacuum.
edit ... If you have a real set of freon gauges on the vehicle you will know if the expansion valve is plugged because you will be running higher than normal head pressures and real low suction pressures. With out a good Gauge manifold which reads the hi and low side pressures the system is almost impossible to diagnose
- Anonymous5 years ago
computerized air con is the place the vehicle keeps the temp at what ever you placed it to as antagonistic to steer air con the place you frequently could save adjusting it to get a ideal temp.
