Fixed - Where is boot intake in 4.4i 2004? - Whistling sound

bimmerFanatic · #1 11-05-2006, 07:20 PM

Last night my car suddenly started whistling. I woke up this morning and no it's not a bad dream, the whistling is still there.

Symptoms are a whining / whistling sound that get strongest around 2500 rpm and stops at higher rpms. Sound is still there when car is stationary but reving engine. If I tap the accelarator I can hear the whistle too. All my searches have pointed me to a cracked "boot intake"

More info in this post:http://www.xoutpost.com/x5-e53-forum/...ne-coming.html

My question is "Where is the boot intake in a 4.4i 2004"? Under the hood I tried to follow my intake find this mysterious "boot intake" but it looks like I may need to remove the silver plastic metalic cover? Or is the "boot intake" before that? Thanks!

Technically Challenged

number 9 is the boot intake in some models...not mine though

asawadude · #2 11-05-2006, 09:24 PM

The cracked boot intake problem as described by member "The Cleaner" involves a 3.0 6-cylinder engine which has a very different intake than an '04 4.4i engine. There does not appear to be an analogous part for your engine.

I looked around to see if there are any other similar complaints from owners with the newer Valvetronic V8 engines - I could find nothing here or in Bimmerfest E60 and E53 forums.

Can you isolate the noise to a particular part of your engine? You'll have to pop the hood open and rev the engine. Or have the dealer take a look.

bimmerFanatic · #3 11-06-2006, 01:36 PM

Thanks asawadude. I'll try that out.

Anybody, Where can I find a diagram for the newer air intakes?

Thanks!

noncom23 · #4 11-06-2006, 01:42 PM

May not be it. But everything I read on 4.4 indicated the
Intake Adjuster.

bimmerFanatic · #5 11-09-2006, 06:18 PM

The Whistling fixed itself! Strange....