View Full Version : Buzzing sound when engine under load, driving me nuts...

04-14-2009, 03:09 PM
Hey everyone, so what is happening is that anytime I give the engine throttle there is this buzzing sound which seems to be directly connected to the amount of boost on the system. For example, WOT through 3000 RPM (5-10 psi) is unbeleavable buzzing, cruising at 2500 RPM (10 mmHG vac) on highway is very little buzzing.

Under normal conditions, such as ideling the sound is barely noticable inside the car. When hood is open sounds like a puttering sound from behind the TB/SC area.

Figure it might be an air leak somewhere ( since its more connected to boost that RPMS) but before I check all the possible leak spots I was hoping someone may have had this problem and can point me in the right direction.

Also, a while back I saw, either here on SCCoA or maybe on TCCoA a picture/diagram of all the possible air leaks. If anyone has that link please post it since I can't find it again and it would be super helpful. Thanks.