Your car or truck's AC system is under extreme pressure and the thermal expansion valve or orifice tube monitors the amount of pressure and the temperature of your A/C system. It calculates the precise amount of refrigerant that can safely go into the evaporator. A failing expansion valve or orifice tube often causes a vehicle's air conditioner to blow hot air.
Replace or Repair
- Expansion Valves: Too much refrigerant causes your evaporator to get too cold whereas too little refrigerant would result in inadequate cooling. The expansion valve is a complex valve that regulates refrigerant flow. This process of metering the refrigerant adjusts the flow according to the temperature of the refrigerant in the evaporator coil. Talk to one of the pro mechanics at Norton Shores Automotive, as this part can be replaced on its own and does not require the entire replacement of the AC assembly.
- Orifice Tubes: Unlike the expansion valve, the orifice tube is a simple fixed device with no moving parts. It therefore cannot vary the flow of refrigerant into the evaporator, but rather causes a permanent restriction in the system. However, like the expansion valve the orifice tube regulates refrigerant flow through the system and filters debris which may come through in its screen. Often fixing a "bad orifice tube" requires replacing the entire evaporator assembly.
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Girlfriend was getting ready to leave town, and she checked her fluids to see all of the coolant was missing from the reservoir. We slowly got this thing over to a NAPA shop, Fruitport Automotive where they then recommended getting this car over to Frank at Norton Shores Automotive. Frank was a class act from the start, providing reassurance and comfort to my girlfriend who was stressed about the situation. Frank took care of us like family would and did it on the house (loose hose/fitting) and refused any offered payment. If there was an option for 10/5 stars, Frank deserves it. Very grateful for both Fruitport and Norton Shores Automotive for helping us with our situation