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 Sunset Auto Imports Service, 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.
More AC Repair Services:
Just want to extend a BIG thank you to Dave and the entire crew at Sunset Auto for their excellent work on my 2002 Toyota Tundra. They did extensive work getting my 200k+ mile vehicle back in tip top shape and at an excellent price. I highly recommend their skilled services as well as their courteous and professional staff. Your vehicle will definitely be in good hands.
At 67 years old I have experienced my fair share of car dealerships and auto repair. I have been using Sunset Auto Imports for over 6 years and it is fair to say they are by far the most professional and most important..... "trustworthy" auto repair shop I have ever experienced. I have every confidence in their expert advice and service and highly recommend them to anyone looking for professional auto repair!!!!!!!!!
Best auto service I've ever had. I can depend on there recommendations and feel they do a very good job with customer service. Have recommended Sunset Auto Service to many and will continue to do so. I feel they are honest and good at giving you a heads up on services that may be needed in the future.
My wife and I choose to travel nearly 25 miles to get to Sunset Auto. We've tried other mechanic shops closer to where we live, but time and again, only Sunset has proven trustworthy and dependable. Other shops routinely "cry wolf", urging expenditures that need to be made NOW. After getting a second opinion from Sunset about the costly recommendation, it becomes apparent that the other shop is just trying to make a buck off scaring us into thinking that our cars are going to explode. When we do spend 3 or 4 figures on a repair at Sunset, we are confident that the work was warranted and that it was done correctly. They're friendly, straightforward, and I'd not hesitate to recommend them. I only wish they were located closer to the west side of town!!!