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January 12, 2012 Service bulletin

Audi: engine has reduced engine performance without loss of power or stalling; circuit grounds; fuel...

Audi technical service bulletin TSB-01-12-39 for 2001-2009 Audi A4, 2002-2007 Audi A6 and 2007 Audi Q7 and others.

Bulletin number
TSB-01-12-39
Component
Engine and engine cooling: engine
Summary
Audi: engine has reduced engine performance without loss of power or stalling; circuit grounds; fuel quality poor; mil is constantly illuminated or flashing; rough idle; ignition coils incorrectly installed; electrical connections loose or damaged.

Owners of these vehicles have filed 363 complaints in the engine category.

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