Parts for your 2014 Mitsubishi Lancer-Tx valve

2014 Mitsubishi Lancer TX Valve: Purpose, Fitment, and Service Tips

Technical sources confirm a thermal expansion valve (TX valve/TXV) is fitted to the 2014 Mitsubishi Lancer. The Mitsubishi Motors workshop manual for the CJ/CF platform (Group 55 – HVAC) shows an expansion valve mounted at the evaporator inlet. Mitsubishi’s electronic parts catalogue (ASA) lists an A/C expansion valve for 2014 Lancer variants (commonly referenced as 7815A095, subject to VIN), and major HVAC suppliers such as DENSO and Four Seasons catalogue a dedicated TXV for this model. So yes—this Lancer uses a TX valve, not a fixed orifice tube.

On the 2014 Lancer, the TX valve meters how much liquid R-134a enters the evaporator, reacting to temperature and pressure so the system stays efficient across different driving and climate conditions. When it’s working properly, occupants get steady, crisp cooling without the evaporator freezing or the compressor overworking. It’s a clever little metering device that quietly keeps comfort on point.

The TXV isn’t a regular service item, but it can clog or stick with age, moisture, or debris. Tell-tale signs include weak cooling at idle, cabin temps that swing hot–cold, frost at the evaporator/lines, a hissing or whooshing near the dash, and odd pressure readings on manifold gauges. Because faults can mimic low gas charge or a tired compressor, proper diagnosis with gauges and temperature measurements is essential.

When replacement’s on the cards, it’s a job for a licensed air-con technician (ARCtick in Australia, similarly licensed in NZ). The system must be recovered, not vented. Access is via the HVAC case behind the glovebox where the TXV bolts to the evaporator pipes. Best practice during refit includes:

• Using new R-134a compatible O-rings, lightly lubricated with the correct PAG oil
• Replacing the receiver–drier/desiccant when the system’s been opened
• Pulling a deep vacuum to remove moisture, then recharging to the exact weight on the under-bonnet label
• Following the service manual for torque specs and leak checks

Owners can help the system last by running the A/C regularly year-round (keeps seals supple and oil circulating) and keeping the cabin filter fresh so airflow over the evaporator isn’t restricted. If cooling performance fades or the system gets noisy, getting it checked early usually saves money by preventing compressor damage.

Popular questions about the 2014 Mitsubishi Lancer TX valve

Does a 2014 Lancer have a TX valve or an orifice tube?
It uses a TX valve at the evaporator inlet. This is documented in the Mitsubishi service manual (CJ/CF, Group 55) and supported by OEM/aftermarket parts catalogues that list a dedicated expansion valve for this model.

What are the signs of a failing TX valve on a Lancer?
Common symptoms are poor cooling at idle, intermittent cold air, frost on lines or the evaporator, and unusual hissing. A gauge set may show abnormal high/low side pressures. Proper diagnosis is important because these symptoms can overlap with low refrigerant or compressor issues.

Should the receiver–drier be replaced when changing the TX valve?
Yes. Whenever the system is opened, replacing the drier/desiccant is recommended to control moisture and protect the new valve and compressor. It’s a small cost that prevents bigger headaches down the track.