I have a 06 mustang gt automatic with just a little over 800 miles and on the interstate running at 75 mph i hear a vibration/ resonating sound coming from the front of the car like the engine compartment. I can feel it through the heels of my feet through the floorboard. It only does it at that speed and rpm. I'm takin it in to ford dealer tommorow. I printed up TSB 06-4-1 about the rattle/noise from the center stack not knowing if that might be the deal. Any input or help would be appreciated.

 

Mark,

My car experienced the same symptoms but at any speed, around 2100 RPM's. At 19,000 miles I printed out TSB #06-4-1 and went to my dealer. After they performed the work it greatly lessened the vibration and noise. It is still there, but more tolerable.

Good luck,

RC

 

any update on this? I have the exact same issue.

 

I had that problem a long time ago on mine. Right around 10,000 miles it went away on it's own And that's before I introduced the 4.10's and longtube headers, so it's a mystery in my case.