Mazda 626 Problem Report

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

(8 reports)
The "Bypass Air Control Valve" can fail causing a low engine idle and possibly stalling.
Runs great cold.... very rough idle when in gear warm ~500RPM- shift to neutral.. all is ok -
idles low once warm -
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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