Mazda Protege Problem Report
Mazda Protege Idles Rough, Misfires, and Possible Check Engine Light
A loose or corroded ground terminal on the driver's side of the cylinder head can cause a rough idle, misfires, and there may be trouble codes. Restore the ground to the cylinder head.
Check engine light flashes somethings then stops..does it randomly more on the highway. Then sometimes check engine light stays on. Seems to lose power only when check engine light flashes - Visitor
Idles Rough, Misfires, and Possible Check Engine Light. - Visitor
Rough idling, sputtering upon startup. Rough when driving. Blinking check engine light. - Visitor
Car has rough Idol and often stalls when stopped. Haven't fixed yet but this sounds like a possible solution. - Visitor
Idles Rough, Misfires, and check Engine Light gas out tail pipe ...bad smell - Visitor
My woman's protege is having the p0300 code I changed the plugs and wires just for good measure but it didn't change anything I cleared the code and it started the rough idle and surging at highway speed pretty much around 45 mph . Gonna change the coil packs and clean the throttle body and MAF sensor hopefully it will clear this mess up.if you have any ideas let me know . Too many forums with useless info about this code . - Visitor
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