Quote:
Originally Posted by sixto
The sensor is exposed to refrigerant so replacement requires that you evacuate the system first.
What do you mean by "I recharged again my AC?" How long before there isn't enough pressure to engage the compressor? The proper way to recharge is, at minimum, to pull a vacuum on the system to verify a closed system then fill with a measured amount of refrigerant and lubricant. To do so, you need a manifold gauge set to check static pressure and, with the compressor engaged, low and high side pressure. Recharge-in-a-can kits only mask slow leaks in a system with just less of a charge than the minimum the compressor switch requires. If your system is basically discharged, such a kit won't displace ambient air in the system and moisture saturating the dryer. You need to pull a vacuum first and most likely you need a new dryer.
Sixto
87 300D^2
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Thanks Sixto for the reply. My ac has a slow leak somewhere as it looses half of its pressure in 2 weeks. I will have to bring my car to a shop because I don't have the equipment and the know how to pull the vacuum. I just used a can recharger to engage the compressor. I guess I can change the sensor and the dryer then bring it to a shop to cut some cost.
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1984 190D 160,000 miles -sold
1992 190E 124,000 manual 2.3 -sold
2000 c230K 84,000
1995 e300 134k