Car Problem Reports

Mazda 626 Stalling and low engine idle due to bypass air control valve failure

Mazda 626 Problem
8 Reports
Me Too

Model Years Affected: 1994, 1995, 1996, 1997

Engines Affected: 2.0L 4 Cylinder, 2.5L V6

Average Mileage: 146,183 mi (68,500 mi - 234,000 mi)

The "Bypass Air Control Valve" can fail causing a low engine idle and possibly stalling.
  • Visitor, , 2.0L 4 Cylinder, 68,500 mi

    Runs great cold.... very rough idle when in gear warm ~500RPM- shift to neutral.. all is ok

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  • Visitor, , 2.0L 4 Cylinder, 234,000 mi

    idles low once warm

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  • Visitor, , 2.5L V6, 167,000 mi

    Car runs fine when cold and warm, once it gets to hot, on faster acceleration and super slow driving (like parking) and at red light in gear (automatic) the engine starts roughing about. Sometimes it even stalls.
    Cleaned spark-plugs and distributor, changed fuel filter, air filter and problem continues.

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