Need help.....misfire - AudiForums.com


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Old 04-19-2017, 02:14 PM
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Default Need help.....misfire

The car had been misfiring. Ran the codes, cyclinder 2&4. Replaced all the plugs and all the coils on all cyclinders just to be safe. Car ran fine for a week. Did the same thing. Started chugging on take off and idle. It's really bad when you get up to 70 on the highway. Checked codes. Cylinder 1 misfire. Now the check engine light is off but it's still running like a misfire. What else could it be?? Any help would be appreciated.
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Old 04-21-2017, 12:13 AM
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Hi,

did you get any other codes along with the misfire?
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Old 04-22-2017, 01:14 PM
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Nope no other codes. Now I just had a cylinder 3 misfire this time. Not number 1 cylinder. And a shitload of smoke blew out the exhaust when it happened.
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Old 04-22-2017, 11:06 PM
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I had similar issues with random misfire. It was along with the idle speed high code. I changed the spark plugs and it seems to work. Few months earlier I had changed the relay dealing with the ecm voltage and power. The relay is in the box where the ecm is on the driver side on my B7. It may not be your problem however since you are not getting the voltage code. Not sure what else to say at the moment.
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