anybody know where the relay is for the fan?

Hey!...thanks alot for the reply i actually found out what the problem is, now i just have to fix it!....so it turns out my smog pump (air pump) which is located in the front passenger below the airbox (you can actually follow the hose that is connected to the air box causing the humming vibrations) was getting stuck. so i simply have to replace it, found it on ebay for about 50 bucks oppose to 350 at the dealer.....Thanks again

Hey if your audi is having these same symptoms check your smog pump/air pump...it might be giving out. If these humming noise doesnt stop even after your veichle is off just get underneath the passenger side front bumper and unplug your air pump...my car just passed the emission test even without the air pump functionally working. hopefully this helps

BUMMMM... I rarely see problems liek this

Oh you noobs :rolleyes:

Its a failed Secondary Air Injection pump relay. It has the tendency to fail closed, therefore constantly completing the circuit, and running the pump till the cars dead. Short term fix, either disconnect the battery when parked, or get into the ecu box and unplug the relay (this will cause a cel, which will be secondary air injection incorrect flow - P0411), but the car will run fine.

Permanent fix: Buy a new relay ~30 and be happy