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Originally Posted by falconsprint
1989 560SEL, 143000 miles
I need to replace the high-pressure hose of my A/C system (it has some cuts). The car has been without refrigerant for over a year now. I did not own the car when it lost the refrigerant. While I'm under the dash should a go ahead and replace the expansion valve anyway? I know that the valve is cheap but it looks like I'll have to buy some crowfoot wrenches for the task.
I'm undecided which way to go. Can anybody give me a convincing reason one way or the other?
~Dave
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I wouldent change the expansion valve. But I would replace the reciever drier. At this point you dont even know what else needs to be replaced so get it to hold freon (thats R12) before changing parts.
Based on the argument you presented you should also change the compressor.
John Roncallo