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 MANUALSHONDA2004S2000 L4-2.2LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGBLOWER MOTORSERVICE AND REPAIRCOMPONENTS REPLACEMENT
2004 Honda S2000 L4-2.2L
Components Replacement
2004 Honda S2000 L4-2.2LSECTION Components Replacement
Blower/Evaporator Unit Components Replacement
Note these items when overhauling the blower/evaporator unit:
- The recirculation control motor (A), the power transistor (B), and the blower motor (C) can be replaced without removing the blower/evaporator unit.
- If you're installing a new evaporator core (D), add refrigerant oil (KEIHIN SP-10).
- If necessary, remove the expansion valve (E).
- 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.
- Reinstall the evaporator temperature sensor (F) in its original location.
- Before reassembly, make sure that the recirculation control linkage and doors move smoothly.
- After reassembly, make sure the recirculation control motor runs smoothly.
- Make sure no air is leaking from the upper housing (G) and the lower housing (H) fitting.
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.