Working Hours
  • Mon 8:00AM - 5:30PM
    Tue 8:00AM - 5:30PM
  • Wed 8:00AM - 5:30PM
    Thu 8:00AM - 5:30PM
  • Fri 8:00AM - 5:30PM
    Sat Closed
  • Sun Closed
settings

248-858-4139 | 309 W Walton Blvd, Pontiac, 48340

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

Great Lakes Auto Repair

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 Great Lakes Auto Repair, 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


What Our Customers Are Saying

Took my vehicle to Great Lakes Auto Repair for an oil leak. They verified my concern, (valve cover gaskets) They went over and above to fix my vehicle at a very reasonable price. Found my new repair shop. They are the best, would recommend them to anyone with confidence. Five Stars!

, 02/11/2021

reviewicon

I have done my car and daughters cars for years. Brakes, Tune ups, Battery, window motors, but I can't do a rear main bearing seal. Neither can the master mechanic I use when I can't do a job. He said he would pass but said expect about a $2200 est. That's what the Dealer wanted! Well my car runs great and not ONE drop of oil has leaked in 6 weeks since I picked up my car from you! And at $1200 for a 10 hour 2 man job you did me a huge favor, thanks is an understatement. You restored my faith in people being decent to one another as well as fixed my car.

, 04/23/2020

reviewicon

There is no other place I would take my vehicles to. Great Lakes Auto Repair has the lowest prices around and some of the most knowledgeable technicians in the industry. The service is top notch and the work is excellent!!!

reviewicon

The best place in town to go. Great Lakes Auto Repair has always helped me with my vehicle repairs. They are honest and fair and always helpful in whatever way possible. If you want to go somewhere that will look out for your best interest, this is the place!

reviewicon

I had a great experience with great Lakes auto! Matt was wonderful, and helpful through the whole process. They diagnosed and repaired my vehicle the same day! I am very pleased with their service, I will definitely returning for future repair needs, as well as recommending them to friends and family. Thanks again Matt!

reviewicon

Great service tries to help you save money great friendly people Update stayed an hour just to get the job done and waited until I got there!

  • ACDelco
  • ASE (Automotive Service Excellence)
  • AutoWares - Auto Value - CSC
  • AutoWares
  • IDENTIFIX
  • Interstate Batteries
  • Moog
  • BG
  • AMSOIL
  • Car Care Aware
  • Call Us For Service: 248-858-4139