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.
1992 Acura NSX StandardFACTORY OEM SERVICE PROCEDURE
Fast Idle Valve: Testing
- Start the engine.
- Remove the cover of the fast idle valve. See Fig 1 .
- Put your finger on the valve seat area and make sure that there is air flow with the engine coolant temperature below 86°F (30°C) and idling. If there is no air flow, replace the fast idle valve and retest.
- Warm up the engine until the cooling fan comes on.
- Check that the valve is completely closed. If not, air suction can be felt in the valve seat area. If any suction is felt, the valve is leaking. Replace the fast idle valve and recheck. See Fig 2 .
Factory Service Tools
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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.
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