Groan noise
This morning it happened and I did have some time. In stead of tapping the throttle, I popped the hood. I tracked it to the air filter box. I popped the lid on it with the engine still running and man did it ever get load. Then it just quit making the noise, just as I got the box fully open.
Could it be doing that because it was trying to suck air past a dirty filter? There are a lot of things hooked to the breather tube that connects the box to the throttle body that I don't recognize(I'm Old School). Is it possible one of them do-dades can make that kind of sound?
I honestly don't know what's been done when on this truck, so I'm gonna replace the air filter for good measure.
Anyone heard of this before ?


