Parts for your 1996 Mitsubishi Pajero-Tx valve

1996 Mitsubishi Pajero TX Valve: purpose, fitment, and service tips

A TX valve (thermal expansion valve) is absolutely used on the 1996 Mitsubishi Pajero’s factory air-conditioning system. This is confirmed by Mitsubishi’s ASA electronic parts catalogue for the NJ/NK series (1994–1997), which lists an expansion valve mounted at the evaporator (common part numbers include MR360682 and MB918713 depending on VIN). The Mitsubishi Pajero/Montero workshop manual (Heater & Air Conditioner section) describes a block-style TXV at the evaporator inlet, and DENSO’s aftermarket catalogue also lists a direct-fit expansion valve for these models. So yes—this Pajero runs a TXV, not an orifice-tube setup.

The TX valve meters R134a into the evaporator based on temperature and pressure, keeping superheat in the sweet spot so the core doesn’t ice up and cabin temps stay consistent. On a big, rugged truck like a ’96 Pajero, the TXV helps deliver stable cooling whether it’s idling after a beach run or cruising the motorway with a full load.

When a Pajero’s TXV starts playing up, owners commonly see:

• Warm or erratic vent temps, especially at idle
• Frost on the suction line or evaporator case
• Hissing at the dash and poor demist performance
• Odd gauge readings (very low or very high low-side pressure)
• System not accepting the full specified refrigerant charge

As part of routine A/C servicing, the TX valve isn’t a “wear item” to replace on a schedule, but it should be inspected whenever the system is open, the compressor is being replaced, or debris/moisture has been present. Best practice on a 1996 Pajero is to replace the receiver-drier whenever the TXV or any major A/C component is changed, flush contaminated lines, fit new O-rings, and recharge with the correct R134a quantity and PAG oil specified on the under-bonnet label or workshop manual. In Australia and New Zealand, refrigerant work must be carried out by an ARCtick-licensed technician.

Replacement is straightforward for a pro: the TXV is a block-style valve at the evaporator behind the glovebox. After safely recovering refrigerant, remove the glovebox and evaporator cover, undo the valve’s line connections, and swap it out. Use new O-rings lightly lubricated with the correct oil, torque the fittings to spec, and insulate as required. Evacuate for 30–45 minutes to boil off moisture, then recharge to the factory spec. There’s no external adjustment on this valve—if it’s faulty, replacement is the fix. Done right, the Pajero’s A/C will blow cold and steady even on a scorching arvo.

Where is the TX valve on a 1996 Mitsubishi Pajero?

It’s a block-style valve mounted at the evaporator inlet, behind the glovebox on the passenger side. Access typically involves removing the glovebox, lower trim and the evaporator case cover to reach the valve and line fittings.

What are the common signs the Pajero’s TX valve needs replacing?

Warm or cycling vent temps, frost on the suction line, hissing behind the dash, and unusual gauge readings during servicing. If the system won’t take a full charge or cooling fades at idle, a sticking or restricted TXV is high on the list.

Should the receiver-drier be replaced when changing the TX valve?

Yes. On these Pajeros, replacing the drier alongside the TXV is considered best practice. It captures moisture and debris so the new valve and compressor aren’t contaminated, helping ensure stable pressures and long-term reliability.