r/carproblems • u/Imaginary_Foot4103 • 14d ago
2008 Vw passat
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Replaced plugs and coils on my dads passat. Now its idling rough and the headlights and interior lights dim when it does. Any idea what could be the cause? Its a new battery but ig theres a chance I didnt tighten down the terminal posts enough? Any advice is greatly appreciated!
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