evolutionm.net - Home of the Lancer Evolution
Home Features Community Marketplace Registry Garage Store

Go Back   evolutionm.net > Lancer Evolution 1-9 Forums > Evo Engine / Turbo / Drivetrain
Sign in using an external account
Register Forgot Password?
Register Photos FAQ Members Calendar Search Today's Posts Mark Forums Read Used CarsGarageVendor Directory
Search


Evo Engine / Turbo / Drivetrain Everything from engine management to the best clutch and flywheel.
Sponsored by: World Racing

Welcome to EvolutionM.net!
Welcome to EvolutionM.net.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old Sep 25, 2008, 11:46 PM   #1
Newbie
Personal Sales Rating: (0)
Garage is empty, add now
 
Join Date: Nov 2007
Location: Sacramento
Posts: 70

Drives: Mitsubishi Lancer Evolution X GSR

High Pitch Noise or Squeal coming from my car. (not brakes related)

Hey Guys,

I am starting to hear a high pitch noise coming from my car. The problem is I can't tell where its coming from. At first, I thought it was gear whine and posted on the gear whine thread, but I really don't know what it is now.

This is what I know so far:

*When driving, I hear a high pitch noise as I accelerate. The Noise starts coming in at around 2,000 rpms and get's louder. As I rev higher, my engine makes a roar that overshadows the pitch. I hear it pretty well during 3K to 4K when I am about do my shift. You hear it pitch up. clutch in..the pitch slowly gets quieter while my revs drop.

I went for a drive. observing the sound. Earlier that day, I accidently dumped my clutch being in the wrong gear at the wrong speed. (Something was on my mind, I shifted out of 2nd but mid way. I hesitated like I had brain freeze. But it pack into 2nd, but my rpms dropped and my speed didn't and....yeah sucks). but I thought the sound got louder. So I was examining my driving.

Here are some experiments I ran:

1) If I blip the throttle, so 0 to 3K. I don't hear the pitch.

2) if I keep a constant rpm while going X speed. let's say 3,000K. The sound is definitely there. The engine somewhat overshadows the sound, but if you hear carefully its there.

3) I thought it was my turbo....if turbo's squel like that but I didn't hear my turbo spooling up. I can tell if I am on boost.

So I thought it was maybe something linked to driveline or gears or flywheel or something where the car is in gear. Ran Next experiment

4) Drive at 50 mph or even 60mphs. Clutch in to Neutral. And slowly throttle to hold a constant rpm but having nothing connected...I can hear the pitch.

Do I need my wheels moving to hear the sound?

5) I head back home and let the car just idle. I can hear a light pitch sound as well. I dunno if its the same one, but I hear it. The sound, I thought was coming from right under my car. Could it be the exhaust? or the pipes. Maybe a air circulation is causing a pitch sound?


any suggestion guys. I'm not a super car die so I really don't know. Plus this is my first standard, maybe it's something I induced from learning.

What in cars make high pitch noises?
Offline
 
Reply With Quote
Old Sep 26, 2008, 06:32 AM   #2
Evolving Member
Personal Sales Rating: (23)
Garage is empty, add now
 
Evo9tunerz's Avatar
 
Join Date: Apr 2006
Location: Minnesota
Posts: 356

Drives: GG IX GSR

I'm thinking it could just be the rear lsd. My whines sometimes too.
__________________
11.80 @ 119 Stock turbo, block, head. Full Bolt ons, cams, and E85 @ 26 psi.
Offline
 
Reply With Quote
Old Sep 26, 2008, 07:44 AM   #3
Evolved Member
Personal Sales Rating: (6)
Garage is empty, add now
 
andrewzaragoza's Avatar
 
Join Date: Mar 2007
Location: DFW, TX
Posts: 952

Drives: 2006 Mitsubishi Evolution IX MR

andrewzaragoza@msn.com
by the sound of it... it may be your input shaft bearing. what oil are u putting in ur transmission.
Offline
 
Reply With Quote
Old Sep 26, 2008, 12:53 PM   #4
Newbie
Personal Sales Rating: (0)
Garage is empty, add now
 
Join Date: Nov 2007
Location: Sacramento
Posts: 70

Drives: Mitsubishi Lancer Evolution X GSR

Quote:
Originally Posted by andrewzaragoza View Post
by the sound of it... it may be your input shaft bearing. what oil are u putting in ur transmission.
redline
Offline
 
Reply With Quote
Old Sep 26, 2008, 12:53 PM
EvolutionM
Mitsubishi Lancer




Paid Advertisement
 
 
 
Reply

Tags
3000, brakes, car, coming, driving, engine, high, making, noise, pitch, pitched, pitches, rpms, sound, squeal

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


 









All times are GMT -7. The time now is 01:13 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
All Passwords