How to Remove the Air Conditioning Evaporator in a Buick Excelle?
3 Answers
Start with the 2 bottom screws first, then unscrew the 3 top screws. When removing, it's best to support with your hand or leg to prevent excessive force on the glove box screw holes causing deformation. Disconnect the low-pressure pipe from the compressor, then remove the high-pressure pipe from the connection at the liquid storage tank. After removal, seal the pipe ends to prevent foreign objects from entering. First locate the plastic cover plate under the front of the passenger seat. Use a 5.5mm hex socket wrench to remove 3 screws and take out the dirty filter element.
Disassembling the Buick Excelle's AC evaporator box, I must say it's a relatively complex process. I've done it a few times myself, requiring patience and attention to detail. You'll need to prepare tools like socket wrenches, screwdrivers, gloves, plus a light to see inside clearly. Then turn off the engine and disconnect the battery's negative terminal for safety—don't skip this step to avoid short circuits. Next, remove the glove compartment and dashboard panels, move aside the ventilation ducts, locate and unscrew the evaporator box's mounting screws. Take it slow throughout to avoid damaging those fragile plastic clips. After removing the evaporator box, check for dirt or refrigerant leaks. When reinstalling, ensure the seals are properly aligned to prevent future issues. Remember, the AC system is sensitive—if you're not experienced, it's best to get help from a professional mechanic to avoid wasting time without fixing the problem. Regular refrigerant top-ups and cleaning can extend its lifespan.
Novices often make mistakes when removing the evaporator, such as not disconnecting the power leading to blown fuses. It's recommended to prepare a full set of wrenches. For the Buick Excelle, the evaporator is located behind the dashboard, requiring removal of the glove compartment first and then partial dashboard structure. Avoid using excessive force when handling clips to prevent interior scratches. Air conditioning evaporators often develop odors due to mold buildup—if it's just a smell, try using a specialized cleaner first to potentially avoid disassembly. After reassembly, test the cooling performance to prevent refrigerant leaks. The job isn't overly difficult but takes about an hour—key is working safely to avoid self-injury.
