Question about 2005 Audi A4

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Random Misfire , Code 300 on OBD Scanner .

I just bought a 2005 A4 Audi Avant 3.0 at 60K couple months ago and I drove it today , the MIL was on and the car started shaking whenever I tried to speed up. A friend of mine who has OBD scanner told me that I have Code 300 which is random misfire. What cause this problem and what should I do before I take it to the dealership. Thanks.

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  • Jredmond26 Oct 18, 2008

    i have had the same problem three times, i bought a 2004 audi a4 3.0 and every time i try to speed up it shakes and is non responcive i replaced one of the coil packs, then after a week the problem started again, i had all 6 sparkplugs repaced, this solved the problem for another week, now im having the problem again, what could it be?

  • Anonymous Jan 21, 2009

    Same problem thinking of pulling the battery and letting it reset. From what I know of small engines they rarely are the problem. It always seems to be the carbs.


2 Answers

Thanks for the response.
I took my car to the shop and had the coil packs replaced, out of 6 coil packs were dead.

Posted on Jul 16, 2008

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  • 13 Answers

Check spark plugs and coil packs

Posted on Jul 16, 2008

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