How to Deal with a Leaking Car Evaporator?

1 Answers
LeAngelo
07/29/25 9:16pm
Remove all the air conditioning screws, the evaporator box will block the blower, pry it loose, then separate the lower blower part, and take out the blower. The expansion valve is connected to the evaporator. Once pressure is applied, bubbles appear at the edges of the expansion valve adjustment screw, confirming the expansion valve is leaking. Replace it with a new expansion valve. Reinstall the air conditioning system in reverse order, add refrigerant, and the air conditioning will resume cooling.
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