97 expedition throttle body area grinding noise coming

[scrambledlife]

97 expedition throttle body area strange rattling noise

When I push the gas pedal (car is parked) FUEL DOOR on the dash moves up to 1.5 and noise starts,giving more gas and goes away.Could it be the Idle Air Control Valve?The strange rattling noise is right around throttle body area.

 

[scrambledlife]

I got a pipe and start listening all around the throttle body.After doing this from under the car ,I got a lucky guess and it was the alternator.Replaced it and so far so good.ty

 

[stamp11127]

My fuel door is in the back. How is yours moving up to 1.5? And what are you talking about with that?

 

[scrambledlife]

My fuel door is in the back. How is yours moving up to 1.5? And what are you talking about with that?

Sorry body I had dead brain at the time couldn't remember,I was trying explain the fuel rpm needle that moves when you push the gas pedal.So sorry,but after changing alternator noise is gone and truck is running good.Thanks again