Parts for your 2018 Ford Everest-Tx valve

2018 Ford Everest TX valve — what it does and when to replace it

Technical sources indicate the 2018 Ford Everest is fitted with a thermostatic expansion valve (TX valve). The Ford Everest (UA) Workshop Manual, section 412‑00 Climate Control, lists a block‑type expansion valve at the evaporator inlet, working with a receiver‑drier integrated into the condenser and R‑134a refrigerant (AU/NZ models). Aftermarket catalogues from Denso, Nissens and NRF also specify a TX valve for 2015–2019 Everest/Ranger T6 platforms (common Ford part family AB39‑19D734‑xx and equivalents). So, yes — a TX valve is relevant and used on the 2018 Everest.

The TX valve meters refrigerant into the evaporator based on temperature and pressure, keeping superheat in the sweet spot so the air‑con cools hard without freezing the core or flooding the compressor. On the 2018 Everest it’s a compact H‑block valve mounted at the evaporator housing (behind the glovebox area), with two lines in and two out. When it’s doing its job, cabin temps stay stable, the compressor is protected from liquid slugging, and fuel use is kept sensible because the system isn’t overworking.

Owners and techs keep an eye on a few tell‑tales that the TX valve is playing up. Stuck‑closed or restricted valves can give weak cooling at idle, frosty or uneven evaporator outlet pipes, low suction pressure and high superheat. Stuck‑open valves can cause higher suction pressure, poor dehumidifying and cycling complaints. Debris from a failing compressor, moisture from a tired drier, or incorrect oil can all upset the valve. If the system’s been open to atmosphere or shows contamination (“black death”), the valve is a prime suspect.

Replacement and maintenance are straight‑forward but should be done by a licensed ARCtick technician (AU) or an appropriately certified HVAC tech (NZ). The process is: recover the refrigerant, access the valve at the evaporator case, swap the TX valve and O‑rings, and torque the fasteners and line joints to the workshop spec (typically low‑teens Nm). Evacuate under vacuum for at least 30 minutes, then recharge with the specified R‑134a mass and the Ford‑specified PAG oil grade shown on the compressor label. Any time the system is opened, replace the receiver‑drier in the condenser and fit new O‑rings. If there’s evidence of compressor wear, flush lines and the condenser or replace as required. Done right, the Everest’s TX valve will deliver crisp, consistent cooling for years.

• Signs to act: fluctuating vent temps, frost on the evaporator outlet, odd gauge readings, or metallic debris in the system.
• Good habits: keep the cabin filter fresh, run the air‑con regularly, and use correct refrigerant and oil by weight.

Does the 2018 Ford Everest use a TX valve or an orifice tube?
The 2018 Everest uses a thermostatic expansion valve, not an orifice tube. The system pairs a TX valve at the evaporator with a condenser‑integrated receiver‑drier, which is the typical layout for TXV systems on the UA Everest.

Where is the TX valve on a 2018 Everest?
It’s mounted at the evaporator inlet inside the HVAC case, accessed from behind the glovebox area. The valve sits between the liquid line and evaporator, with two lines secured by bolts and sealed with O‑rings.

Do I need a regas after replacing the TX valve?
Yes. The system must be recovered, then after fitting the new valve and O‑rings it needs a proper vacuum and recharge with the specified R‑134a mass and PAG oil. This requires licensed equipment and should be done by an ARCtick (AU) or certified (NZ) technician.