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− *01 S0X4A00A20336334854FEAT00 Special Tools Required 11-238 Intake Air System Intake Air Bypass Control Thermal Valve Test A A973X-041-XXXXX Vacuum pump gauge, 0 30 in.Hg A973X-041-XXXXX 1. Start the engine, and let it idle. NOTE: Engine coolant temperature must be below 2. Remove the vacuum hose (A) from the intake pipe, and connect a vacuum gauge to the hose. 3. Raise and lower the engine speed, and make sure the vacuum gauge reading changes as the rpm If the vacuum reading changes, go to step 4. • Misrouted, leaking, broken, or clogged intake air bypass control thermal system vacuum lines. • A cracked or damage intake air bypass control thermal valve. 4. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let 5. Raise and lower the engine speed, and make sure the vacuum gauge reading does not change as the If the vacuum reading changes, check for these • Misrouted, leaking, broken, or clogged intake air bypass control thermal system. • A cracked or damaged intake air bypass control thermal valve. 03/07/29 09:24:41 61S0X050_110_0238 |