Whistling sound only on partial throttle. - Club Lexus Forums

Log In 

Whistling sound only on partial throttle.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-05-10, 11:14 AM   #1
Vadim540i
Lexus Test Driver
Thread Starter
 
Vadim540i's Avatar
 
Join Date: Apr 2008
Location: California
Posts: 891
Default Whistling sound only on partial throttle.

The engine makes whistling sound only when it's warmed up, and only on partial throttle. If I give more or less gas, the noise disappears. Maybe some type of vacuum leak? Any ideas?

(97 SC4).
Vadim540i is offline   Reply With Quote
Old 11-05-10, 11:24 AM   #2
sc4demon
Lexus Test Driver
iTrader: (2)
 
sc4demon's Avatar
 
Join Date: Apr 2009
Location: NY
Posts: 980
Default

my sc4 does that too from 2nd to 3rd gear but i have a intake that makes that noise. I like that noise though it kinda sounds like a baby wastegate.
sc4demon is offline   Reply With Quote
Old 11-05-10, 11:32 AM   #3
Vadim540i
Lexus Test Driver
Thread Starter
 
Vadim540i's Avatar
 
Join Date: Apr 2008
Location: California
Posts: 891
Default

Quote:
Originally Posted by sc4demon View Post
my sc4 does that too from 2nd to 3rd gear but i have a intake that makes that noise. I like that noise though it kinda sounds like a baby wastegate.
Mine is pretty loud, and I don't really enjoy it. Pretty annoying in fact. I don't like noise...
Vadim540i is offline   Reply With Quote
Old 11-05-10, 11:44 AM   #4
sc4demon
Lexus Test Driver
iTrader: (2)
 
sc4demon's Avatar
 
Join Date: Apr 2009
Location: NY
Posts: 980
Default

i think i know that noise that your talking about ...like a really loud whinning noise when you accelerate, my car used 2 do that only in the rain for some odd reason, but it eventually went away..its probably a vacuum leak or something.
sc4demon is offline   Reply With Quote
Old 11-05-10, 12:34 PM   #5
Vadim540i
Lexus Test Driver
Thread Starter
 
Vadim540i's Avatar
 
Join Date: Apr 2008
Location: California
Posts: 891
Default

Quote:
Originally Posted by sc4demon View Post
i think i know that noise that your talking about ...like a really loud whinning noise when you accelerate, my car used 2 do that only in the rain for some odd reason, but it eventually went away..its probably a vacuum leak or something.
It probably is but where lol. There are so many little hoses, I hope I can figure it out today.
Vadim540i is offline   Reply With Quote
Old 11-05-10, 01:48 PM   #6
lexgsj01
Driver
iTrader: (4)
 
Join Date: Feb 2006
Location: New Jersey
Posts: 176
Default

This is a long shot but I had that problem on my old 92 ES, it turned out to be the bearings on the alternator. Never experienced anything like it before or since. But it was making a loud whistling, and it was throughout the rpm range.
lexgsj01 is offline   Reply With Quote
Old 11-05-10, 02:09 PM   #7
Kira X
美少女戦士セーラームーン
iTrader: (22)
 
Kira X's Avatar
 
Join Date: Oct 2008
Location: 東京都
Posts: 8,154
Smile

Quote:
Originally Posted by sc4demon View Post
my sc4 does that too from 2nd to 3rd gear but i have a intake that makes that noise. I like that noise though it kinda sounds like a baby wastegate.
I love that sound too! Do you know if the SC300 makes that cool sound with an intake like the SC400 does?

Sorry to get off-topic, but I've always wondered about that.
Kira X is offline   Reply With Quote
Old 11-06-10, 11:24 AM   #8
sc4demon
Lexus Test Driver
iTrader: (2)
 
sc4demon's Avatar
 
Join Date: Apr 2009
Location: NY
Posts: 980
Default

Quote:
Originally Posted by Kira X View Post
I love that sound too! Do you know if the SC300 makes that cool sound with an intake like the SC400 does?

Sorry to get off-topic, but I've always wondered about that.
idk i guess you can make it do that, il pm you a pic of the inside of my intake...its all you need to make that sound...

and for the loud whistling sound throughout the rpm range..i do remember changing out the alternator out so that could be the solution.
sc4demon is offline   Reply With Quote
Old 11-08-10, 10:44 PM   #9
Vadim540i
Lexus Test Driver
Thread Starter
 
Vadim540i's Avatar
 
Join Date: Apr 2008
Location: California
Posts: 891
Default

It is not throughout the rpm range but only happens around 2k rpm, and only on partial throttle. On full throttle it does not make any noise.
Vadim540i is offline   Reply With Quote
Old 08-30-13, 02:32 PM   #10
fleecer
Driver
 
Join Date: Apr 2010
Location: ga
Posts: 107
Default

just did my valve cover gaskets.... got a strange whistle when it warms up. mine only happens when im off the gas. goes away when i give it a little gas.
fleecer is offline   Reply With Quote
Old 08-30-13, 06:48 PM   #11
1JZPWRD
1JZ Single SC400
iTrader: (59)
 
1JZPWRD's Avatar
 
Join Date: Jan 2009
Location: Alabama, Roll Tide!
Posts: 8,500
Default

Can anyone post up a good video of the actually noise?
1JZPWRD is offline   Reply With Quote
Old 08-30-13, 07:29 PM   #12
93Gotjuice
Pole Position
iTrader: (6)
 
93Gotjuice's Avatar
 
Join Date: Dec 2012
Location: Socal* *
Posts: 361
Default

Mine does this too! Makes it sound like it's supercharged
93Gotjuice is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
sometimes I hear a thick whistling breathing edupim RX - 1st Gen (1999-2003) 8 02-26-14 07:56 AM
ES300 High Pitch whistling sound Braver ES - 1st to 4th Gen (1990-2006) 6 08-20-12 10:17 PM
Throttle Position Sensor Sturds RX - 1st Gen (1999-2003) 1 01-18-12 05:55 AM
30MPH Whistling, Humming? sabciu GS - 2nd Gen (1998-2005) 13 01-12-07 05:08 PM
Whistling Sound From the Engine lexguynj GS - 2nd Gen (1998-2005) 8 03-28-02 04:30 PM


Tags
1998, 328ic, 540, 98, bmw, gas, hit, lexus, making, noise, sound, throttle, whisleing, whistle, whistling

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 Off
Refbacks are Off

Forum Jump


All times are GMT -7. The time now is 03:37 PM.


Copyright © 2000-2016 Internet Brands, Inc. All Rights Reserved