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Best Auto Repair, Ramona

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Replace Your Car's AC Thermal Expansion Valve or Orifice Tube


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 Action Auto Care, 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.


what our customers say

Staff is great and always helpful. They never overcharge and will work with you on getting things fix that are priority. We have been going to them for 2 years now. We will continue to do so.
M

Great experience! My car unexpectedly broke down and they fit me into their busy schedule. Great communication and didn't cost me an arm and a leg. Now I know where to go in Ramona to get my car fixed. Thank you!
K

The owner Dave is very honest and fair. They've done a great job with my 2001 Ram. Highly recommend them.
L

Dave and his staff are amazing. They know what they are doing and they are very efficient. I have been coming here for many years, and I would definitely recommend them to anyone. Thanks Action Auto!!!
A

I have always had a great experience when I have taken my car to action auto. David and his staff have always been very nice, helpful, honest, and professional. They let you know what needs to be fixed/replaced immediately, what may need to be soon or in the near future, and if possible give you options of the such. I won't take my wife's car and my car anywhere else!
J

I have been going to Action Auto for 7 years and have been very happy with their work. They always go over things with you and let you know what is needed and the price. If things change they inform you and let you decide what to do. I would recommend Action Auto to all. Nice place and great service.
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