Guys - I have this bizzare noise coming from my driver's front right. I have a 5.4L 2001 and it sounds exactly like a JetLiner landing! It is constant except for the pitch. The pitch changes as the accelerator is depressed?

Any ideas?

Did you put any mods on it for intake? Sounds like the throttle body area. Check around to make sure all the hosing for the intake are on properly.

If you happen to put a throttle body spacer then you will get that noise.

No, the car is stock, but I will check the hoses to the throttle body. Thanks!

heard of 2 things;
1. IAC valve making noise. &
2. MAF sensor making noise. good luck

I'd put my money on the IAC valve

MAF has no moving parts and can not make noise unless something has passed the filter and entered the sensor

tap on the iac is probably sticking,common problem
cleaning mis only a temp fix

CHange the IAC valve and you'll be on your way

Pacus I agree, but some say it make noise. My money would be on IAC[sm=lockeddance.gif]

Uh, IAC is short for...?

IAC- Idle air control.

Controls airflow into the engine at idle. Kind of what mixture screws used to do on a carburator.

later,
Dustin

Ah, Thanks!