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HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 25 (ENGINE CONTROLS - SYSTEM & COMPONENT TESTING)IDLE CONTROL SYSTEMBY-PASS AIR CONTROL VALVE (MILLENIA 2.3L)
2010 Mazda 5 Sport, 2.3 L, Standard

By-Pass Air Control Valve (MILLENIA 2.3L)

2010 Mazda 5 Sport, 2.3 L, StandardSECTION By-Pass Air Control Valve (MILLENIA 2.3L)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 Mazda Protege5, 2002 Mazda Protege, 2002 Mazda Millenia, 2002 Mazda MX-5 Miata, and 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

By-pass Air Control (BAC) valve is located on rear of front cylinder head. See Fig 1 . Ensure engine is cold. Start engine and let it idle. Idle speed should gradually decrease as engine reaches normal operating temperature. If idle speed does not decrease, check coolant hose to BAC valve. Repair as necessary. If coolant hose is okay, replace BAC valve.

Fig 1: Identifying BAC Valve (Millenia 2.3L)
G97C07234Courtesy of MAZDA MOTORS CORP.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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