pontiac read code a300?
engine soon light is on in car after coil pack was replaced.. car is still shaking and very loud.. pontiac grandam 2001 se 4 cyclinder. i need to know what my car needs because my car is shaking, making loud noise and im pissed i gt a coil pack n didnt need it...
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I'm assuming you mean "p0300" which means that a random or multiple cylinder misfire has been detected. If the engine is loud it could have blown a spark plug out, try removing the coil packs and see if the plugs are in tight.