High-pitched whistle w/ acceleration

[TheFunk]

Tried searching around but I don't even know how to describe the sound, let alone where it is coming from. Sounds like its coming from the front of the car, possibly front right engine bay.
Been doing this since I got the car, has a "sweet spot" to make it work. If I let off the throttle or give it more gas it will stop.



Been shrugging it off too long while I work on other things, now it's time to get to the bottom of it.

[Accord problems]

it's you're intake . mine does it mainly because i have a cold air intake .

[TheFunk]

*facepalm*
Seriously?

I've had similar setups in other cars and never heard anything like it. When I originally ruled out the intake I was just trying to find that sweet spot with a friend under the hood listening... Never could recreate the sound.
I kinda want to dig up my oem intake to verify that for safe measure.

So if it is just a whistle made when just the right amount of air passes through, how do I go about silencing it?
Anything to do with the filter itself?

Oh and on a side note I gave someone a ride the other day and they thought that sound was a turbo.... I wish:/

[Accord problems]

no real way to silence it other than to put back on the stock one .

[TheFunk]

no real way to silence it other than to put back on the stock one .

Or get a different intake setup? I can't imagine everyone with a non-OEM intake setup on a CB7 hears this.

[deevergote]

I have a CAI, so I've never heard anything like that.
In the video, it almost sounds like an electronic whistle. Is it definitely coming from the engine bay, and not from your speakers?


What sort of intake setup are you using?

[Accord problems]

mine started to after i put on my after market air intake . do to my secondary runners not opening up all the way do to not having the iab box . so after market the air intake just make's it noticeable .

[TheFunk]

I have a CAI, so I've never heard anything like that.
In the video, it almost sounds like an electronic whistle. Is it definitely coming from the engine bay, and not from your speakers?


What sort of intake setup are you using?

Electronic whistle? No, not from the speakers that I can tell, slightly louder with window down.

My setup is some additional tubing after oem intake tube and a Spectre come filter on the end. I have the resonator thing capped on the oem tubing.

[deevergote]

Pics?

Sounds like it's a cobbled-together setup. Very likely the cause of the whistle.
Also, those Spectre filters are awful. It would be wise to replace it with one from AEM, K&N, or Apexi.

[Bad_dude]

I got the stock box and I get it. It's very faint but I could hear in a quiet area while driving slow.

[FarmerD]

Usually this noise is caused by bad bearings in the transmission.

To confirm you are barking up the right tree, flush the transmission fluid. Watch the sparkle show begin. Hopefully no chunks of brown plastic. Those are the cages that space the balls apart in your ball bearing bearings.

[Accord problems]

^^^ what

[Bongo]

It's probably your clutch throwout bearing. I can't hear any whistle in the video and I turned it up loud with a 600watt surround system. Mine does the same thing as what you've described. I swapped the motor and trans and didn't have time to wait for the throwout bearing even though I knew it was going out. Now it makes a "whistle" sound during certain rpms depending on throttle input(no rattle sound at all). Of course that will be coming from the passenger side of the engine bay. It is not your intake. I've had intakes that whistled because of a vacuum line not connected so it would pull air into the small fitting on the intake right by the throttle body. If that fitting isn't open then your intake has nothing to do with the noise.

So for whatever my opinion is worth at this point on this forum.... I'm saying it's your clutch throwout bearing going bad. If you've got an automatic transmission then it's most likely a vacuum leak. Hope this helps

[TheFunk]

To confirm you are barking up the right tree, flush the transmission fluid. Watch the sparkle show begin. Hopefully no chunks of brown plastic. Those are the cages that space the balls apart in your ball bearing bearings.

I am out of state for a little while but will try this when I get home.

I'm saying it's your clutch throwout bearing

I've had one replaced in another vehicle and never heard anything like it. However my clutch is pretty worn out, replacing it as soon as possible but might still be a little while.

Pics?

http://www.cb7tuner.com/vbb/showthread.php?t=201784

[FarmerD]

Re: Throw out bearing. I highly suspect not. Because this bearing only gets loaded when you engage the clutch.

You seem to be having that noise during acceleration, from what I can see.