Most people here on mud probably know that I'm a stickler for knocks, rattles, clunks, and any other noises that are annoying in my 40. For the last couple of years I've had an annoying knock, a very light hollow knock is about the best description, from somewhere around the driver knee area, sometimes it sounded like it was at my feet, sometimes it sounded like it was behind the dash. Usually always at idle or low rpms.
I've done all kinds of crazy things to identify the source of the sound.
The hood hinges? I put some rubber pad under the hood side to eliminate any play. No dice.
The edge of the hood vibrating against the front apron? Some edge guard rubber along the apron. No dice.
After months, if not years of trying to pinpoint the source of that annoying sound, I may have lucked out.
Today I spent some time digging around under the hood, and under the dash.
Two possible things came to light, one was part of the wiring harness right behind the fuse block "may" have been vibrating against the body.
The second suspect, which I believe to be the one, was the speedo cable, and the parking brake cable, ever so lightly vibrating against each other and resonating through the firewall.
Some zip ties on both possible culprits and some test driving, and it seems like the sound is gone.
Now it's time to get busy livin.