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 GMP Automotive Inc., 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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What Our Customers Are Saying
This garage is great! I snapped a hard brake line trying to get it off of my car, so needed to have a new one made. GMP took my old one, duplicated it, had it back to me the next day. With only a few tweaks it fit like a glove. Will be going here for work in the future!
Huge shoutout to Travis who answered my call, arranged an appointment for my Corvette C8 rear brake pads change, and accommodated my time changes for 3 times. I had to reschedule because I was swamped for the last week. He sent me an estimate and it looked good and reasonable. Dropped it off today after lunch and it was done by the end of the day. Highly recommend, would definitely come back.
Brakes, near Apex, NC
Awesome service and highly skilled technicians! My 18 year old Ford diesel was experiencing issues and I sought out GMP to help me diagnose the power loss. Online forums had more than 12 things that could have been the cause, which worried me about a possible rabbit hole this could be on such an old truck. Dave B at GMP listened carefully to the concern, came up with a plan and dug in the resolve it. A little scary for me, because the entire cab of the truck had to come off to access the turbo, where the problem resided - but Dave set me at ease and showed professionalism and calm. Ultimately the work Dave did resolved the issue and hope to get another 5 or more years out of the truck! Dave also recommended a few other items, while the cab was off, that made great sense to get done at the same time. Thank you Dave and the entire GMP Automotive group for such great work! You have earned a long term customer that will be reaching out for my general and difficult maintenance in the future!
Diesel Engine Repair, near Cary, NC
Solid place, honest and detailed.
Car & Truck Care, near Holly Springs, NC
