Parts for your 2007 Ford Falcon-Tx valve

2007 Ford Falcon TX‑valve: what it does and how to look after it

Based on the Ford BA/BF Falcon workshop literature (HVAC, Section 412—Climate Control) and common AU/NZ parts catalogues for BA/BF (2002–2008) platforms, the 2007 Ford Falcon uses a thermal expansion valve (TX‑valve) mounted at the evaporator inlet. So yes—on a 2007 Falcon, a TX‑valve is very much a relevant, fitted component of the factory R134a air‑conditioning system.

The TX‑valve meters refrigerant into the evaporator, reacting to temperature and pressure to keep superheat where it should be. That control stops the evaporator icing up, prevents liquid slugging the compressor, and helps the Falcon deliver steady, cold air at the vents in Aussie and Kiwi summer heat. When the valve is healthy, the system cools quickly at idle and cruise, with stable vent temps and correct high/low side pressures.

There’s no routine “service” for a TX‑valve, but it pays to keep the rest of the air‑con in good nick so the valve can do its job. A clean cabin filter, a debris‑free condenser face, and correct refrigerant charge are all key. If the system has been open to air, or the compressor has failed, moisture and debris can foul the valve’s tiny passages and upset its thermal bulb, so replacement becomes smart maintenance, not just a repair.

Typical signs the TX‑valve is on the way out include weak cooling (especially at idle), vent temps that swing hot‑cold, evaporator freeze‑up with low airflow, hissing at the dash, or pressure readings that don’t make sense (e.g., very low suction with normal/high head). When leaks or restrictions are suspected, best practice on a 2007 Falcon is to replace the TX‑valve and renew the receiver‑drier (or drier cartridge if it’s built into the condenser), then evacuate and recharge to factory spec with fresh PAG oil as required.

1. Recover any remaining refrigerant properly.
2. Remove the cowl/trim to access the TX‑valve at the evaporator connections.
3. Replace the valve and all related O‑rings, torque to spec and insulate the bulb/lines as fitted.
4. Fit a new receiver‑drier or drier cartridge.
5. Vacuum the system deeply, verify it holds vacuum, then recharge to the correct weight.
6. Check for leaks with UV dye and confirm stable vent temps and pressures on test.

Treated this way, the BF Falcon’s TX‑valve will keep the cabin comfy and the compressor happy for the long haul.

Popular questions

Where is the TX‑valve on a 2007 Ford Falcon?
On BF‑series Falcons it’s fitted at the evaporator inlet on the cabin side of the firewall. Access typically involves removing cowl trims and working at the heater/evaporator case where the A/C lines pass through.

What symptoms point to a failing TX‑valve on a BF Falcon?
Expect poor cooling at idle, fluctuating vent temps, possible evaporator icing, and pressure readings showing very low suction with normal or high head pressure. Sometimes there’s a noticeable hiss near the dash area.

Should the receiver‑drier be replaced when changing the TX‑valve?
Yes. Any time the system is opened, renew the receiver‑drier or the drier cartridge (if integrated with the condenser). It protects the new valve and helps ensure a reliable, moisture‑free system after recharge.