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Wining Noise coming from engine 2000 A6 2.7T

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Old 01-02-2018, 07:39 AM
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Default Wining Noise coming from engine 2000 A6 2.7T

I have this wining noise coming from the engine at start up and while driving. I think it might be the secondary air injection pump because I get the
  • P0491: Secondary Air Injection System Insufficient Flow (Bank 1)
  • P0492: Secondary Air Injection System Insufficient Flow (Bank 2)
error codes. Is there a way I can shut off this annoying noise until I can replace the pump? Like maybe remove a fuse...? Or is that not a good idea? Thanks in advance.
Old 01-02-2018, 08:47 AM
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If you locate the air pump that is making the noise, you can disconnect it at the electrical connector. It's a 2 prong plug, and, IIRC, points straight down. That will stop the dentist drill sound,
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