[nyc07_king.titan]

my 07 just started doing the whine. it onl;y does it when i release the gas to slow down. when i step on the gas it goes away. guess a trip to the dealer might be in order.

 

[roy365]

then go buy a ford gm dodge and get the hell off this website

Good one.

Anyway....back to your question. I would bet lunch that it's just air moving over or through your intake system making the whistle/whine. Mine does it.....I have narrowed it down to where the air enters the intake from the fender.:dunno:

 

[jasonmotox]

I drilled out the drain hole in the bottom of my intake and that caused it to whistle/wine? Maybe check yours, could be something lodged in yours?

 

[Jtime]

Just took 05 to dealer for 30k service and had recommended differential fluid change and fuel injector cleaning done during same visit - immediately came away with a whistle/whine. Sound occurs anytime gas pedal is pressed, but only while driving, very noticable 20-40mph. Sound never existed before 30k maint. Dealer can't find or fix problem, and later said this is common and were suprised I hadn't heard it before now. Dealer believes it is related to intake plenum.

 

[ucf_motorcycle]

I had the same issue. I thought it was for sure coming from the driveline. Turns out it was the power steering pump. It started making alot of noise in parking lots when I turned the wheel alot at low speed. I already posted how I fixed the power steering whine.

Basically got Lucas Power Steering leak stop fluid.