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Can someone help me with this: car sounds like crap at idle, and after STFA i narrowed it down to...

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Old 06-24-2004, 06:23 AM
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Default Can someone help me with this: car sounds like crap at idle, and after STFA i narrowed it down to...
cylinder misfires (i haven't confirmed it with VAG tool). I did use Techron and the problem hasn't been solved.

Did I diagnose it wrong? Should I completely replace all spark plugs? Do I need to replace the coilpack?

Any help would be appreciated, thanks!
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Old 06-24-2004, 06:31 AM
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Vacuum leak?
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Old 06-24-2004, 06:36 AM
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have you been driving the car hard lately? or really really easy?
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Old 06-24-2004, 06:41 AM
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really easy and been very consistent about it
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Old 06-24-2004, 06:43 AM
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if they've been somewhat short trips you may have fouled the plugs up..
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Old 06-24-2004, 06:50 AM
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and using a fuel injector cleaner like techron wouldn't have helped?
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Old 06-24-2004, 06:52 AM
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if they're fouled up really bad then no. you'd need to drive the car harder land longer too.
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Old 06-24-2004, 06:59 AM
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Idle Control Valve? Possibly dirty? .. past the MAF near intake, right?
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Old 06-24-2004, 08:47 AM
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dang... got to drive harder and longer that just sucks..
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Old 06-24-2004, 08:52 AM
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I would check with the VAG tool before making any assumptions/repairs. Check 015,016.
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