LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Strange noise while in drive.

Thread Tools
 
Search this Thread
 
Old Apr 6, 2010 | 06:35 PM
  #1  
97 Trans Am ws6's Avatar
Thread Starter
On The Tree
 
Joined: Jan 2009
Posts: 124
Likes: 0
From: Chicago
Default Strange noise while in drive.

Noise just started today, drove the car for half and hour, it sat for no more than 5 minutes. came back outside and started it up and no noise, put into drive and gave it some gas and a whine/whistle/whirling sound can be heard towards the front/middle of car. makes the same noise in reverse also. i drove it around the block and the pitch goes up with rpm increase. if i put the car in neutral and rev there is no noise. so doesnt seem like anything belt drive or internal engine. problem is im 15 miles from home and deciding if i need a tow home because i have no clue where this noise is coming from.

could it be a pulley?

Last edited by 97 Trans Am ws6; Apr 6, 2010 at 07:24 PM.
Reply
Old Apr 6, 2010 | 11:43 PM
  #2  
97 Trans Am ws6's Avatar
Thread Starter
On The Tree
 
Joined: Jan 2009
Posts: 124
Likes: 0
From: Chicago
Default

just drove home and car drives like normal, gauges normal, its shifting normal (A4) it sounds like a supercharger whine, problem is as i speed up i cant hear it over my exhausts so tomorrow im gunna try and get it on a lift at school. but this noise is driving me nuts. only time you can really hear it is in gear, sounds is coming from engine bay. noise get higher pitch as rpms climb.
Reply
Old Apr 8, 2010 | 02:02 PM
  #3  
97 Trans Am ws6's Avatar
Thread Starter
On The Tree
 
Joined: Jan 2009
Posts: 124
Likes: 0
From: Chicago
Default

maybe a vacuum leak somewhere but wouldnt it whine it neutral also or just under load in a gear? anyone have an idea?
Reply
Old Apr 8, 2010 | 02:14 PM
  #4  
big_bird_93's Avatar
Launching!
iTrader: (1)
 
Joined: Mar 2009
Posts: 200
Likes: 0
Default

Im not an expert by far. I would assume a whirling or any whistling sound would be coming from some kind of vacuum system. I would start by inspecting every vacuum line. Just give everything a good once over. Was there anything else that happened around the time the noise started? any other symptoms?
Reply
Old Apr 8, 2010 | 03:13 PM
  #5  
jaycenk's Avatar
TECH Addict
iTrader: (1)
 
Joined: Jun 2009
Posts: 2,210
Likes: 1
From: Holiday, FL
Default

Pull the belt off and run it with out the belt for a few min to make sure it's not the alt, ac, or ps pump.
Reply
Old Apr 8, 2010 | 05:07 PM
  #6  
t/afrom504's Avatar
On The Tree
 
Joined: Jun 2008
Posts: 183
Likes: 0
From: new orleans to houston
Default

i had that same problem 3 months ago and I tried to figure out what it was but then I said the hell with it until...two weeks ago my waterpump started leaking badly! So it might be your waterpump thats about to fail on you!!!
Reply
Old Apr 8, 2010 | 06:26 PM
  #7  
myltwon's Avatar
TECH Addict
iTrader: (1)
 
Joined: Jul 2004
Posts: 2,965
Likes: 7
From: Palm Harbor, FL
Default

if the sound is coming from the middle of the car (back of motor/transmission area) and the noise is only heard while the transmission is in gear then I'd assume it's a problem associated with the flexplate or torque convertor like a loose bolt or faulty part.
Reply
Old Apr 8, 2010 | 11:24 PM
  #8  
97 Trans Am ws6's Avatar
Thread Starter
On The Tree
 
Joined: Jan 2009
Posts: 124
Likes: 0
From: Chicago
Default

yea vacuum is what ill check next but if waterpump was going then it would whistle even in neutral. theres a possibility that it can be the ps pump because it does get very stiff every once in a while.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Apr 8, 2010 | 11:31 PM
  #9  
97 Trans Am ws6's Avatar
Thread Starter
On The Tree
 
Joined: Jan 2009
Posts: 124
Likes: 0
From: Chicago
Default

Originally Posted by myltwon
if the sound is coming from the middle of the car (back of motor/transmission area) and the noise is only heard while the transmission is in gear then I'd assume it's a problem associated with the flexplate or torque convertor like a loose bolt or faulty part.
its hard to tell where its coming from under the hood, i can lightly brake torque it you can faintly hear it, and i didnt think that a flexplate or torque convertor would make a whistle/whine sound. and the car shifting normal
Reply




All times are GMT -5. The time now is 02:45 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE