Best Auto Repair, Dorchester

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Call us for all your car needs! 617-269-7799

On the corner of Park St & Clayton St

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 European Motorsport LLC, 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:

Truck and Car AC Repair Services

Freon Recharging Services For Your Car Or Truck

AC Evaporator Services

ASSOCIATIONS

  • ASE Master Technician
  • Car Care Aware

Testimonials

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    Had trouble with 2013 A4 with 6-speed manual that would barely shift anymore with 36K and thought it need clutch/throw out bearing replaced. After disassembly Mike called and let me know what he thought was really going on was due to dual mass flywheel and unfortunately clutch replacement would not fix the issue. It ended up costing much more than original scope of only clutch kit replacement but thanks to Mike's time spent researching the issue we got it fixed right the first time!

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    Great great place. Can't say enough about Mike - he calls you back immediately, they don't try to get you to fix things that don't need fixing, they couldn't be nicer - he even remembers my face and my name! The car has been in great shape since I had it fixed up there - also, I've rolled in there with a flat tire and they've replaced the tire on the spot in fifteen minutes. They are just great and you cannot go wrong with the service. I don't think they are expensive at all compared to a dealer and they are far more trustworthy. Let me just say - I have a ten year old plain old Toyota Camry CE and I am getting the best service one can get, so they aren't even snobby about the cars they fix! Use this place if your car needs anything.

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    First off, I consider myself a car guy, not quite a 'gear-head'; but I love my cars. I don't drive the nicest of Benz's, or the fastest of Porsche's, but my VW is my dream car.. and I drive it, for lack of a better term 'enthusiastically' (spirited). I change fluids, I use good parts, and I take care of it (take care of your things, and your things will take care of you). This means that whenever I need anything handled, I bring it to Mike (Curry). Not only is he a whiz about all that is cars, he is the NICEST guy I've ever worked with.. Sure, the work isn't cheap, but I would pay MORE if I had to, to get the service and quality work that goes into my car, and my time with them. Options are always laid out, prices are always on point, and service is always through the roof.. Recommended? No, I URGE you to bring your car in for service here, get it done right the first time.. so that it won't break down on you in the future. You won't feel 'taken' when you leave here.. I Promise Promise Promise you will love the work they do.

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    I have been bringing a BMW here for a few years. They do an outstanding job and are happy to explain any work. I feel very confident that I'm getting the real story. There have been times I know they could have told me something needed fixing, but instead they told me I still had life and didn't pressure a fix. They were always right. It's very comforting to feel like you can trust your mechanic. If you have a foreign car give these guys a shot because you won't be disappointed. Mike the owner is a straight shooter and easy going guy. He understands doing a good job equates to a loyal customer. He even has the cars washed before you pick them up. There is definitely a sense of pride in his shop. Basically I know when my car rolls out of this place it is in the best shape it can be.

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    Finding a trustworthy and fair auto mechanic is a very difficult task. I am happy to have found European Motorsport. Mike, the owner, has taken excellent care of me every since my first visit 4 yrs ago. He will be honest with you regarding any immediate service as well as tell you if things really dont need to be addressed at that moment. I brought my estimate from Herb Chambers of the number of things wrong my with my BMW that NEEDED to be fixed according to them. When I brought the car to EM, Mike put the car up on the lift and pointed out the areas of interest and their status. 2 of the 7 things actually needed repair. He also showed me a brand new part to compare it to the one that was on my car! Talking a customer out of buying a new part? Really!? It could have been a flux capacitor for anyone who doesn't know cars. My car runs perfect and I will continue to send all of my family and friends to Mike. A real class act Plus he washes the car and cleans it up before returning it to the customer.

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    Fantastic first time experience. Brought in my 2014 Audi S4 for a 10k interval oil change and wheel alignment. Made reservation quick and easy online. Great, prompt email communication (not easy to find these days). Dropped off car in the morning before work, picked it up same day after lunch. Car exterior and interior were also courteously cleaned. I can't imagine I would ever go to a dealership for service ever again.