Parts for your 2013 Ford Falcon-Tx valve

2013 Ford Falcon TX valve: what it does and how to look after it

Based on Ford service literature for the FG MkII Falcon (HVAC, Section 412-03) and Australian parts catalogues that list a block-style thermostatic expansion valve (TXV) for BA–BF–FG Falcons, the 2013 Ford Falcon is fitted with a TX valve at the evaporator connection. So yes, a TX valve is relevant to this model.

On a 2013 Falcon, the TX valve meters refrigerant into the evaporator, matching flow to heat load so the air-con stays cold without freezing the core. Unlike a fixed orifice setup, the TXV constantly trims flow using a sensing bulb/diaphragm arrangement, which helps keep vent temps steadier across Aussie and Kiwi conditions, from muggy city crawls to long highway runs.

There’s no scheduled replacement interval for a TX valve, it’s a “replace on condition” item. Typical clues it’s on the way out include weak cooling at idle, frosty or sweating lines near the firewall, vent temps that surge hot–cold, or odd pressure readings (low low-side with normal/high high-side for a restricted valve, or the reverse if it’s stuck open). A competent technician will confirm with manifold gauges and temperature drop checks across the evaporator.

When replacement’s on the cards, it should be done by a licensed air-con technician, as the job involves recovering refrigerant, opening the system and recharging R134a to the exact weight shown on the under‑bonnet label. Good practice includes:

• Renewing the TXV O-rings and lightly oiling them with the specified PAG oil.
• Replacing the receiver–drier (often integrated with the condenser on FG models) if the system has been opened.
• Leak testing with dry nitrogen, then deep vacuuming before the recharge to pull out moisture.
• Weighing in the charge and verifying superheat/subcool figures to ensure the TXV is metering correctly.

Access to the Falcon’s TXV is at the evaporator connection, depending on variant, that’s at the firewall area and may require trim or shield removal for the retaining fasteners. Because space is tight, correct torque on the valve fasteners and pipe fittings is important to avoid leaks. After the recharge, expect stable vent temps, no line frosting where it shouldn’t be, and a quiet, consistent airflow. Treated right, a quality TXV will deliver years of chill without fuss.

Popular questions

Does the 2013 Ford Falcon use a TX valve or an orifice tube?
The 2013 Falcon (FG MkII) uses a thermostatic expansion valve mounted at the evaporator connection, not a fixed orifice tube. This design pairs with a receiver–drier at the condenser end to manage refrigerant flow and moisture.

What are common symptoms of a failing TX valve on a 2013 Falcon?
Look for poor cooling at idle, fluctuating vent temps, frost on the evaporator inlet or lines near the firewall, and pressure readings that don’t sit where they should. A professional gauge set and temp drop test across the evaporator will confirm.

Should the TX valve be replaced during routine servicing?
Not by default. It’s replaced when faulty or whenever contamination is suspected. If the system is opened, always renew O-rings and the receiver–drier, evacuate thoroughly and recharge to the specified R134a weight.