Mazda 626 Problem Report
Mazda 626 Stalling and low engine idle due to bypass air control valve failure
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 - Visitor
idles low once warm - Visitor
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. - Visitor
i had a idle air control valve put and the dealer said that was the problem buts still idling u...
what are the most common oil leaks in this engine?
The intake manifold gasket can fail causing vacuum a leak and/or a rough idle condition. Replac...
The passages for the Exhaust Gas Recirculation (EGR) system can become restricted or clogged ca...