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Home >> Honda >> 1994 >> Prelude VTEC >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/O Codes >> Symptoms >> Idle Rpm High When Warm
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Idle Rpm High When Warm

Check idle adjuster screw. Check Idle Air Control (IAC) valve, fast idle valve, Engine Coolant Temperature (ECT) sensor, vacuum hose connections, and A/C signal circuit.

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