Accord Sedan V6-2.7L SOHC (24 Valve) (1996)
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Fast idle thermo valve
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Hoses and connections
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Idle air control valve and its mounting 0-rings
2. If the above items are normal, substitute a known-good Idle air control valve and readjust the idle speed.
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If the idle speed still cannot be adjusted to specification (and the scan tool does not indicate diagnostic trouble code P0505 or P1508) after
idle air control valve replacement, substitute a known-good engine control module and recheck. If symptom goes away, replace the original
engine control module.