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Old November 14th 16, 07:19 AM posted to rec.autos.makers.mazda.miata
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Default 1997 P0300 weirdness

I know this was 5 years ago, but did you ever figure out your problem? I have the exact same issue with my '97.

I think I figured it out, I found a Technical Service Bulletin for the P0300 code and it says that if your vin is under a certain number (JM1NA35**V0727842) then your problem is caused by a mis-logic of the ECM/PCM. My vin is lower than this number so I guess I'm going to search for an ECM out of a later '97...
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