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 Midway 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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I cannot say enough great things about Paul and Midway Automotive! I had a flat tire, limped into Midway and Paul took the time to look at my tire to see if it could be fixed. Unfortunately, it was not fixable and Paul did not have the tire I needed, but he put my spare on and gave me a few names to call to get a tire. In addition, he did some calling on his own to see if he could find a used tire for me! What a great guy! He did not have to do that, but went over and beyond to help! I would take my car or truck to Paul and trust him completely to do whatever I need! Midway is a little treasure in Stone Lake! No need to go to the bigger cities when Paul can help!
We found ourselves in need of an automotive shop to look at our car. Being from out of state, we contacted the nearest shop, Midway Automotive, Inc and hoped for the best. We were not disappointed. They got us in quickly, assessed the issue, and got us on our way the next morning; honest with what needed to be done and didn't overcharge us! I wish they were located where we live as I would take my cars to them every time! Thank you, Paul and your mechanics for a job well job.