Hi there, I have a 2001 330i and I have a high pitched whine from the throttle position or something! When you are giving it gas to gain more speed there is no noise but when you try to maintain the speed I have a high pitched whin coming from around the drivers feet area. It does not matter what speed you are doing 20mph or 60mph anywhere....when you get to the speed you want it lets out a sound that drives you NUTS!!! does anybody have an idea what I might be looking for? any help would be great !!!!thanks....chevy
Noise from throttle pedal?
- Thread starter chevy
- Start date
Hi there, thanks for your replays. the noise that I hear sounds like it's from the front door speaker. Remember on old cars when you got the high pitched whine from your stereo speakers and it was your ignition just making noise and it would get higher when you stepped on the gas. This noise is not from the stereo it is there when the radio is off or on, when you give it more gas to pick up speed it goes away and the when you ease up it starts to come back. It's like when you are at work and they the hearing test it's a high pitched whistel, it's not a gear howl that I'm hearing and it coming inside the car.....anyway , again thanks for your replays....please keep trying....thanks, chevy
My 02 325i just started doing this. Seems to be a certain spot on the accelerator pedal that initiates and ends this ear piercing tone. My pedal assembly was replaced a few months ago due to 'notchy throttle,' but the sound started two weeks ago!! This BMW is more maintenance than my VW I traded it for!~
update: Went to Rasmussen today and the second tech was able to clearly hear this whistling/piercing tone that seems to be actuated by throttle position. They are ordering some actuator flap this is part of the manifold. Veesa or Deesa actuator?? is the name. ANyway, the first tech asked if I could hear it outside of the car. I have not listened for it from outside, so when i got home i drove up the alley with the window down and I could clearly hear a whistle. SOOOOO, hopefully they have diagnosed it correctly. Let you know next week.
i just fixed this exact same thing on my 323. it is possible that your disa valve is faulty(mine was) but your whistle is probably coming from a bad intake boot. this boot is located righ before the throttle body. there is an accordian like offshoot that is on the back side of that boot that the cyclone seperator hooks to. looks good at a glance but if you look closly with a flashlight, that little accordian is prolly totally dry rotted and has holes in it. this is your whistle problem. this part is about 12 or 14 bux from the bmw dealer or bavauto.com carries them as well. if your disa actuator is bad then you should replace it, but it isnt your cause of the whistle i CAN tell you. i replaced my disa first, at a cost of like 160 dollars just for the part, which much to my shigrin did not stop my whistle. only to find out all i really needed was the intake boot. but i did get to find a faulty part as the result of my little hunt for the whistle.
i have been on e46fanatics site for some time now. this annoying intake noise plagues many e46's. i had it, and i searched and searched for an answer. there were a ton of people with the same prob i had but no one could come up with an answer. so i set out to find the prob myself and succeded finally. if you want to check your disa valve, it is on the drivers side of the engine, attached to the intake manifold. it has a vacuum actuator you can see move. just start the engine and either reach down and manually operate the throttle or have someone hit the gas pedal inside the car. when they hit the gas pedal you should be able to see the actuator move back and forth depnding on the vacuum in the engine. if it is moving back and forth about a 1/2 inch or so, then you dont need a disa. if it just jiggles a little or not at all, then there is a hole in the vacuum diaphram and need replaced. the disa is supposed to alter the characteristics of the intake manifold runners depending on rpm and load. most people could block theirs off and prolly notice ver little difference. i could notice very little diff.there is also a core charge onthe unit if i remember right. the intake boot isnt hard to replace if you have even a basic set of tools. i did mine in about thirty five minutes. and it was the first one i replaced, ever. so dont let them gouge you on the labor time. i have heard quotes as high as 200 bux to replace this boot from other people on e46fanatics. good luck! [bmwkick]
oh and the intake whistle is still there, the noise just doesnt leak out of the intake anymore. there is no way to fix the throttle plate resonance that i know of. that is what all the baffles and stuff are for in the stock intake and airbox. and the reason everyone notices the whistle alot more with cai's is all that baffling and insulation stuff is gone .