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Old 05-31-2001, 06:25 AM
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I am just about finished with my 82 380SL restore and had a question. I just replaced the A/C compressor with a 134a conversion.The A/C works fine but I have noticed that the compressor will continuously cycle. I noticed that I have lines running to fuel distributor and assume that is to cool the fuel. Is it normal for this to occur? Is there a way to shut off the A/C to the evaporator. The A/C has not been working since I have owned the car so I don't know how its suppose to behave. Thanks for the help.

Derrick USAF

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Old 05-31-2001, 07:18 AM
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What you describe is "short cycling" and this is most often caused by insufficient refrigerant charge. What is your high side pressure?

Have a great day,
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Old 05-31-2001, 08:19 AM
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I had to guess on exact amount of 134a but I think I am within a few ounces. Head pressure runs bewteen 200-220 psi and the suction runs 18-25 psi.
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