Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSHONDA2009S2000 BASEREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHEATING/AIR CONDITIONINGEXPANSION VALVE REPLACEMENT

2009 Honda S2000 Base

Expansion Valve Replacement

2009 Honda S2000 BaseSECTION Expansion Valve Replacement

Remove the blower/evaporator unit (see BLOWER/EVAPORATOR UNIT REMOVAL/INSTALLATION ).
Remove the evaporator core (see BLOWER/EVAPORATOR UNIT COMPONENT REPLACEMENT ).
Remove the bolts (A).

Fig 1: Bolts, Outer Seal And Expansion Valve With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the outer seal (B) and the expansion valve (C).
Install the expansion valve in the reverse order of removal and note these items:
- If you're installing a new expansion valve, add refrigerant oil (SP-10) (see A/C REFRIGERANT OIL REPLACEMENT ).
- Replace the O-rings with new ones at each fitting, and apply a thin coat of refrigerant oil before installing them. Be sure to use the correct O-rings for HFC-134a (R-134a) to avoid leakage.
- Immediately after using the oil, reinstall the cap on the container, and seal it to avoid moisture absorption.
- Do not spill the refrigerant oil on the vehicle; it may damage the paint; if the refrigerant oil contacts the paint, wash it off immediately.
- Make sure that there is no air leakage.
- Charge the system (see SYSTEM CHARGING ).

RENDER: 1.0x

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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.