Wining Noise coming from engine 2000 A6 2.7T
#1
AudiWorld Member
Thread Starter
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)
#2
AudiWorld Super User
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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