Audi A6 The mid-sized Audi A6 model offers more room to the driver and passengers over the A4 line.
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Old 05-02-2009, 02:16 PM
twinturbosixer's Avatar
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Location: Greenville, South Carolina
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Exclamation P0491 and P0492

Ok, I know this has been coveres several times now, and I know its the secondary air systems bank 1 and bank 2. I know its most likely a vac. leak because i was replacing the coolant temp sensor just befor this happened and probably cracked a line.

I just dont know which lines are vac lines. can anyone expand on this perhaps?!?!

THANKS!
 
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Old 05-02-2009, 09:25 PM
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Most of the lines are vacuum lines some are braided rubber lines others are hard tubing that crack easily. Shouldn't be to hard to find and most likely a hard line. The splices brake easily too.
 
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