Parts for your 2006 Mitsubishi Outlander-Tx valve

2006 Mitsubishi Outlander TX-Valve: what it does and when to replace it

Based on the Mitsubishi Outlander (CU) 2003–2006 Service Manual HVAC section, Mitsubishi ASA/CAPS parts catalogues, and common aftermarket listings (DENSO, Four Seasons, GPD) for the 2006 Outlander, this model uses a thermostatic expansion valve (TXV) mounted at the evaporator inlet. So yes—the tx-valve is relevant and fitted to the 2006 Mitsubishi Outlander.

The tx-valve is the air-con system’s metering brain. It measures refrigerant into the evaporator based on temperature sensed by its bulb and the pressure at the outlet, keeping superheat in the sweet spot. That balance stops the evaporator icing up, keeps vent temps consistent, and helps the compressor live a long and happy life. On a 2006 Outlander, it’s a block-style valve bolted to the evaporator inside the HVAC case behind the dash (access is typically from the passenger side after removing trim and the glove box).

When a tx-valve starts playing up, owners might notice:

• Poor cooling at idle but better on the move
• Fluctuating vent temperatures or a whooshing/hissing that never settles
• Evaporator freeze-up or a warm cabin despite a charged system

Replacement isn’t a driveway job unless they’re licensed and kitted out. The refrigerant (R‑134a) must be properly recovered. With the system empty, the valve can be unbolted from the evaporator block. New O-rings (lubed with the correct PAG oil) and the specified torque are a must to avoid leaks. It’s good practice to replace the receiver/drier or desiccant bag and add the correct oil quantity for any parts changed. After reassembly, the system needs an evacuation (deep vacuum) to remove moisture, then a recharge to the factory mass on the under‑bonnet label. In Australia and New Zealand, this work should be done by an authorised/licensed air-conditioning technician.

The tx-valve itself doesn’t have a routine service interval, but prevention helps:

• Keep the system clean—replace the cabin filter to maintain airflow across the evaporator
• Run the A/C regularly year‑round to move oil and keep seals supple
• If the system has suffered a compressor failure or debris, insist on flushing lines where appropriate and replacing the drier and tx-valve to protect the new compressor

Get the basics right—clean airflow, correct charge, proper oil—and the Outlander’s tx-valve will usually tick along for years without drama.

Popular questions about the 2006 Mitsubishi Outlander tx-valve

Where is the tx-valve located on a 2006 Outlander?
It’s mounted at the evaporator inlet inside the HVAC case, typically accessed from the passenger side behind the glove box. Some trim and the glove box need to come out to see the block-style valve and its sensing bulb/capillary arrangement.

How do they tell a bad tx-valve from low refrigerant?
Both can cause weak cooling. Low refrigerant often shows as uniformly poor cooling and compressor cycling. A sticking tx-valve can cause wildly fluctuating vent temps, frost on lines at the firewall, or an evaporator that ices up despite a seemingly correct charge. Proper diagnosis uses gauges, temperature measurements, and leak testing.

Should the receiver/drier be replaced when changing the tx-valve?
Yes, it’s strongly recommended. Opening the system lets moisture in, and the drier’s job is to capture that. Many techs also replace the desiccant bag (if integrated in the condenser) whenever a major A/C component like the tx-valve is changed.