Condenser, Compressor, Expansion Valve

Howdy all,

Took my car in because “cool” air was actually warm. Shop found leak at Expansion Valve (electric green dye visible). They recommended Compressor, Expansion Valve, and Drier/Accumulator replacement.

Would like to attempt DIY especially since the hoses don’t have refrigerant.

My question to ya’ll is: If the new compressor is the only new part that is packaged with PAG oil do I also need to add oil to the condenser/drier/ accumulator combo (the recommended amount via Volvo), or must I empty and measure any oil in the system and old drier/accumulator and add measured amount to new, un-oiled part?

When those components are replaced, the entire AC system is flushed to remove any oil/debris from the system prior to reassembly.

But the real question is, why are those components being replaced because of a leak?


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Is it the case that if one replaces the expansion valve they should replace the compressor in addition to the dryer/accumulator?

You don’t replace AC components if one component is leaking.

You replace the component that is leaking or the O-ring for that component,


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Whelp. This makes much more sense. Once the set arrives-I’ll update. Thanks for your clarity and zen, Tester.

This might be helpful