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 Ann Arbor Transmissions, 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 clients are saying about us
We have established longterm and stable partnerships with various clients thanks to our excellence in solving their automotive needs!
Honestly, the best shop in Ypsilanti/Ann Arbor. I have been to this Shop twice with two different cars and every time they have done nothing but great service. When I say, I think I found the one to go to that I would never stray away from, it's Ann Arbor Transmissions. Sidenote: It was months ago when I got service and I randomly decided to do this on my own because they are that great.
Ann Arbor Transmission treats customers like family! My transmission went out, Ron fought for me when it came to my warranty company & provided elite customer service the entire process, keeping me informed & eased my worries. The technicians found other minor & not so minor issues with my vehicle & they made sure everything was repaired before my car left the shop, AT NO EXTRA COST! Justin was beyond professional when I spoke with him & incredibly knowledgeable when it came to warranty companies & even provided recommendations for companies that provide incredible service. As a woman it's hard to find reputable places that won't take advantage of me, this team at Ann Arbor transmission went above & beyond what words can describe. Echo (the most handsome shop dog) was the star of the shop & also provided greeting services as soon as I entered & promptly sniffed to ensure customer satisfaction. Thank you Ron & Justin & everyone at Ann Arbor Transmission for treating me like family & going above & beyond. Excellent, time-sensitive services. 1,000/10