Recent content by Matos

  1. Matos

    [SOLVED] Rough idle, stuttering cold start, p0300

    I am a very frequent browser on this forum. I have a 08 mazda3 and I'm having this same damn problem. I got it to stop for literally 2 months by cleaning off the negative terminal on the battery AND cleaning the 2 grounds on the drivers side of the bay. One is on the tranny and the other is...
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