Hey all! I have a 2006 GT that has this sound driving me nuts!!
It is coming from the inside of the car. More specifically on driver side.
I do not hear it all the time.
It seems to only be heard when I accelerate.
Its the loudest when I WOT on a dead stop or when I'm already moving.
I do not hear it on the outside.
It never use to make that sound.
The sound sounds like a suction. That's the closest sound I can think of.
The car has a few aftermarket parts.
Roush CAI Roush Mustang Cold Air Intake 402099 (05-09 GT) - Free Shipping
Cervini Hood Cervini's Ram Air Type IV Mustang Hood - Unpainted 1187 (05-09 GT, V6) - Free Shipping
Strut Brace SR Performance Black Mustang Strut Tower Brace 383959 (05-14 GT, V6) - Free Shipping
Push to Start Button Ford Mustang Push Button Start Ignition Kit (05-10 All) - Free Shipping
There are more, but I only posted the ones that are in the front end. I had the hood, CAI, and button for a while, never heard anything. I installed the Strut brace and after a while, I start to hear it. I have no idea what it could be. I even took of the brace and went for a drive without it, and it still makes the noise. I checked all the vacuum lines, and I do not see anything wrong. I am completely confused on what that could be. Thanks for the help!