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 Wyoming 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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Our family has used Wyoming Automotive for over 20 years. It is a family owned business and we can always depend on Wyoming Automotive for honest and professional service for all of our vehicles. I highly recommend them to anyone looking for prompt and trustworthy automotive care and advice.
I've been taking my car here for about a year and have had nothing but great experiences! I really trust them and would recommend them to anyone.
I first started going to these guys when my warranty (and free oil changes) was up. They are friendly, prompt, and reasonably priced.Twice since, I have had unusual, unpredictable, mechanical problems occur the day before I was to leave on vacation . Does this happen to everybody else, or is it just me? Anyway, both times they were able to fix my car quickly enough to allow me to make it to our destination on time. Places like this used to be easy to find in my younger days. They are few and far between today.
Mark and his team take great care of our vehicles. My husband and I are very happy with the work that is performed and the pricing that goes with that work. Best thing of all, is that we trust him to let us know what is wrong and they do not try to run up the bill by saying there are problems with parts that are just fine!