Parts for your 1995 Mitsubishi Pajero-Tx valve

1995 Mitsubishi Pajero TX Valve: Purpose, Service and Replacement

Based on technical sources including the Mitsubishi Pajero/Montero Workshop Manual (HVAC section: Expansion Valve) for the 1991–1996 platform, the Mitsubishi ASA/EPC parts catalogue for V2/V4/V6 chassis, and Denso/Sanden A/C application data for mid‑90s Mitsubishi SUVs, the 1995 Pajero uses a thermostatic expansion valve (TX valve/TXV) in its R134a air‑conditioning system. So yes, a TX valve is fitted and relevant to servicing this model.

The TX valve meters liquid refrigerant into the evaporator, responding to evaporator outlet temperature and pressure to maintain the right superheat. That clever metering keeps the evaporator cold without letting liquid flood back to the compressor, helping cooling performance in Aussie and Kiwi summers while protecting the compressor. When a TXV sticks or drifts out of spec, drivers might notice weak cooling at idle, iced lines at the firewall, short‑cycling, or odd high/low pressure readings on the gauges. On Pajeros with rear A/C, there’s a second TXV at the rear evaporator, so issues can be front, rear, or both.

Replacement is a straightforward but A/C‑licensed job. The system must be recovered, the evaporator housing accessed (front unit is behind the dash, rear unit sits in the rear quarter on models so equipped), and the valve swapped with new O‑rings. Any time the system is opened, the receiver‑drier should be replaced. After reassembly, pull a deep vacuum, confirm it holds, then recharge with the correct R134a mass shown on the under‑bonnet label and add the right PAG oil balance for any parts changed. A stuck‑shut TXV gives low suction and poor cabin cooling, stuck‑open can frost the evaporator and risk slugging—both warrant replacement rather than “cleaning”.

Preventative care is about keeping the system clean and dry: fix leaks promptly, keep the condenser fins clear of bugs and grime, and run the A/C regularly to circulate oil. On a 1995 Pajero, access can be fiddly, expect a couple of hours’ labour for front‑only systems and longer if the vehicle has rear air. Using quality valves and correct torque on fittings pays off with quieter operation and colder vents.

Where is the TX valve on a 1995 Pajero?

On front A/C systems, the TXV sits at the evaporator inlet inside the HVAC box behind the dash, near the firewall pipe connections. Pajeros optioned with rear A/C also have a second TXV mounted at the rear evaporator in the rear quarter trim area.

What are common signs the TX valve needs replacing?

Typical clues include poor cooling at idle, icing on the evaporator pipes, short‑cycling, or pressure readings that are unusually low on the suction side or erratic on the high side. Similar symptoms can come from low refrigerant or a weak compressor, so proper diagnosis with gauges and temperature checks is essential.

Should the receiver‑drier be changed with the TX valve?

Yes. Any time the system is opened, replace the receiver‑drier, renew O‑rings, evacuate thoroughly, and recharge to the under‑bonnet spec. It helps keep moisture and debris out, protecting the new TXV and the compressor.