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2004 audi a4 quattro-I cant get it through emssions. The
2004 audi a4 quattro-I cant get it through emssions. The evap system and secondary air system is "not ready". Thought it was a miles thing but I have put over 1,000 miles on it since this started almo… read more
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Audi a4 quattro: hi i just bought a 2000 audi a4 quattro 1.8t
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My 2002 A4 Avant makes a loud whistiling/air noise when cold started, it lasts a couple of minutes then goes away. I was advised this could be a bearing on an emission controls pump. Does this sound c… read more
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Audi a4 Quattro: first start..Turbo..a loud whining noise..sputtering
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Hello, I have a 1999 audi A6 2.8L Quattro. Shop is saying code
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2001 audi a4: obdii..secondary injection incorrect upstream flow
2001 audi a4 1.8t engine. I have obdii code PO411 secondary injection incorrect upstream flow detected, what causes this?… read more
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2001 Audi A4: vehical inspection..fault code..flow..air pump
2001 Audi A4 1.8T just had vehical inspection and failed for fault code PO411: Secondar Air Injection System incorrect flow detected. How can I check to see if air pump is OK and its not just a cut of… read more
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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