SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSFORD2010FOCUS S, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 347 (HVAC CONTROL SYSTEM)DESCRIPTION AND OPERATIONAIR CONDITIONINGAIR CONDITIONING - ESCAPE HYBRIDTHERMOSTATIC EXPANSION VALVE
2010 Ford Focus S, Standard

Thermostatic Expansion Valve

2010 Ford Focus S, StandardSECTION Thermostatic Expansion Valve
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  1. An in-line filter is installed in the auxiliary evaporator inlet line at the floorpan bracket connection. A restriction in this filter may cause misdiagnosis of a failed thermostatic expansion valve. This filter must be inspected before a new thermostatic expansion valve is installed.
  2. Install a new evaporator core orifice and thermostatic expansion valve in-line filter whenever a new A/C compressor is installed.

The thermostatic expansion valve (TXV) restricts the flow of refrigerant from the high pressure side of the refrigerant system and separates the low pressure and high pressure sides of the auxiliary refrigerant system. Refrigerant entering the auxiliary evaporator core passes through the TXV. A temperature sensing bulb senses the temperature of the refrigerant flowing out of the evaporator core and adjusts an internal pin-type valve to meter the refrigerant flow into the evaporator core. The internal pin-type valve decreases the amount of refrigerant entering the evaporator core at lower temperatures and increases the amount of refrigerant entering the evaporator core at higher temperatures.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.