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Home >> Acura >> 1997 >> Integra GS-R, 2D Coupe >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls - System/Component Tests - Except GS-R) >> Idle Control System >> Engine Controls - System/Component Tests - Except GS-R >> Fast Idle Thermo Valve
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Fast Idle Thermo Valve

WARNING: This page is about a different variant/trim than selected.
  1. Remove intake air duct from throttle body. Ensure engine coolant temperature is less than 86°F (30°C). Start engine and allow to idle. Place finger over lower port in throttle body. See Fig 1 . If air flow is present at lower port in throttle body, go to next step. If air flow is not present, replace fast idle thermo valve and recheck for symptom.
  2. Start engine and run at 3000 RPM with no loads and transmission in Park or Neutral, until radiator fan comes on. Allow engine to idle. Fast idle thermo valve should be completely closed. Place finger over lower port in throttle body. If vacuum is felt or engine idle speed decreases, fast idle thermo valve is leaking. Ensure engine coolant level is correct and cooling system is free of air. If okay, replace fast idle thermo valve and recheck for symptom.
    Fig 1: Fast Idle Thermo Valve Port
    G96J10065Courtesy of AMERICAN HONDA MOTOR CO., INC.
    NOTE: If fast idle thermo valve was removed, perform PCM reset procedure. See PCM RESET PROCEDURE/CLEARING CODES in the TESTS W/CODES - EXCEPT GS-R article.
    NOTE: For Idle Air Control (IAC) valve information and test procedures, see the TESTS W/CODES - EXCEPT GS-R article.
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