Results 1 to 11 of 11

Squealing noise in 2000 LS1 - help! desperate

This is a discussion on Squealing noise in 2000 LS1 - help! desperate within the Internal Engine forums, part of the LSx Technical Help Section category; Folks: Sorry I am always needing help when I am on here. Here is my problem: Just go my 2000 ...

  1. #1
    Junior Member
    Join Date
    Apr 2012
    Location
    Missouri
    Posts
    17

    Red metallic

    Squealing noise in 2000 LS1 - help! desperate

    Folks: Sorry I am always needing help when I am on here.

    Here is my problem: Just go my 2000 LS1 running in my 62 Impala wagon. Had fuel pump issues that you all helped me resolve. However, when I run the motor, there is a rather high-pitched squeal in the motor. It almost sounds like you have a gear drive on the motor or a blower.
    I ran it without the serpentine belt and it is still there. That eliminates water pump, power steering,etc. The motor has about 40 psi oil pressure at idle. I put a new oil pump in it when the motor was out of the car so I have had the timing cover off the engine. The motor was a take-out from a 10,000 mile car. The car was hit on its top so I don't think the motor ran on its side,etc.
    It sat in my garage 4 years before I did anything to it.
    I have pulled the valve covers to make sure everything is good in there. No problems. I put a Wieand aluminum intake on the motor in place of the stock plastic one. Other than that, I haven't touched anything else. Any thougths? As always, thanks in advance for your help!

  2. #2
    Former Mopar Man 2002ssslp's Avatar
    Join Date
    Jun 2011
    Location
    Branchville, NJ
    Posts
    3,111

    Silver & Blue
    02 Camaro SS, 04 GTO

    It may be the timing chain hitting the inside of the cover ? Just a guess.
    My ride is a 2002 Camaro SS SLP #3296 with 30k, LTH, 3" Y, CME, Frost tune, K&N, ported TB, Blackwing lid, Bellows, MSD, Denso Iridium, and 85mm MAF, Bilsteins, Eibach springs, SLP strut brace, Adj. Panhard, TA Girdle, UMI, Pro 5.0, Nitto NT555
    My wife has a 2004 GTO with the rare SAP, 18" wheels, K&N Cold Air System, MSD, Ported TB, Frost tune, Denso Iridium, Flowmaster cat-back, 3200 Yank, 75k

  3. #3
    Junior Member
    Join Date
    Apr 2012
    Location
    Missouri
    Posts
    17

    Red metallic
    Anything about the timing gear or cover that would make it do that? I used a GM tool to put the cover back on. This tool aligned the cover on the crank shaft. Is there something I could have done wrong there that would cause a problem?

  4. #4
    None Shall Pass Knight's Avatar
    Join Date
    Jan 2010
    Location
    East of Cleveland, Ohio
    Posts
    3,828

    Black
    99 WS.6 - Modified

    Does the squeal increase in volume or change when you increase the rpms? Any erratic operation of the engine?

  5. #5
    Junior Member
    Join Date
    Apr 2012
    Location
    Missouri
    Posts
    17

    Red metallic
    Yes, it does go up and down with the RPM. The motor idles good. There are no codes. I drove the car in and out of the garage once and it didn't appear to have a lot of power (i.e. had to push down on the gas to get it to move). Could the squeal be related to a leak around the intake? I put choke spray around the manifold to see if it changed idle and it didn't. When I put the Weiand intake on I didn't like how it fit into the "valley" of the motor. It did torque down ok though.

  6. #6
    None Shall Pass Knight's Avatar
    Join Date
    Jan 2010
    Location
    East of Cleveland, Ohio
    Posts
    3,828

    Black
    99 WS.6 - Modified

    I was thinking a possible vacuum leak. The timing cover would be a good place to start. Might also check around the crank pulley and see if there isn't anything contacting down there.

  7. #7
    Junior Member
    Join Date
    Apr 2012
    Location
    Missouri
    Posts
    17

    Red metallic
    Thanks Knight. Does the lack of "power" cause you to think there is a vacume leak?

  8. #8
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,519

    98 Formula
    06 duramax

    the lack of power could be as simple as an out of adjustment throttle cable.....do you have a scan tool so you can see the throttle %? Are you not running a/c on the car as in there were no belts hooked up and it still squealed? Can you at least tell if it's coming from the front or rear of the motor? Those intakes fit like shit from everything I've read.....they're also not a great choice to begin with. Spraying it though should have exposed any vacuum leaks I would think. Apart from that I think the timing chain might be a good place to look. What chain does it have on it? Normally you'll hear more about rubbing issues on a double roller than you will the singles....not sure if I've ever heard of a single rubbing the cover.

  9. #9
    Junior Member
    Join Date
    Apr 2012
    Location
    Missouri
    Posts
    17

    Red metallic
    I took the belt off and ran it without a belt altogether. It has air but there wasnt a belt running anything. The timing chain is the original GM. When I changed the oil pump I put the old chain back on. The car only had 10k on it so I figured no need to change the chain. I don't remember seeing any "play" in the chain, etc.
    The sound reminds me of the gear drives we use to put on cars to make them sound like blowers. I used a piece of hose to listen to the noise and it sounds like it was coming from the front of the motor. Thanks for all your help. I think I will pull the front cover and see what is up in there.

  10. #10
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,519

    98 Formula
    06 duramax

    what oil pump did you use? Were you careful with that o-ring on the pick up tube? Have you checked pressure on it? I can't think of anything that would make the sound you're describing really other than an alternator, water pump, or power steering pump but those have been ruled out. Kinda just leaves the oil pump, timing chain (although I highly doubt it), and the balancer. Check the clearance on the balancer too....maybe when you put that back on something went wrong? Did you torque that balancer bolt correctly? I've read a number of times where people don't torque that right and it works it's way off the crank. Just not a lot left up there to make noise. Did you put a rag in the oil pan when you swapped out the pump to keep the bolt from dropping and rolling back? That's what I did and buttoned everything back up......fortunately I remembered it was in there and caught it before starting the car. Had to tear it back apart but it was worth it not to get a rag around the crank.
    Last edited by 0rion; 05-22-2012 at 02:38 PM.

  11. #11
    Junior Member
    Join Date
    Apr 2012
    Location
    Missouri
    Posts
    17

    Red metallic
    Just wanted to give everyone an update on this post and thank you for all of the suggestions. Here's what I did: took off the Weiand intake and replaced it with a BBK intake. When doing so, I notice that I had originally put the throttle body gasket on backwards so that the gasket was covering up the opening for the idle air sensor. I put the gasket on the right way, put the car back together and the noise stopped! So it was either the intake or the fact that I had the sensor covered with the gasket. Live and learn. Thanks again.


Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Help: Camaro 2000 Differential NOISE SOUND !!
    By Jeddah_z28 in forum Drivetrain
    Replies: 8
    Last Post: 05-26-2010, 07:18 PM
  2. Noise and oil pressure issues. 2000 SS
    By Y2KArcticSS in forum Internal Engine
    Replies: 5
    Last Post: 06-24-2008, 08:44 PM
  3. 2000 corvette ls1 noise
    By foruwhatisit in forum New Member Introductions
    Replies: 8
    Last Post: 06-16-2008, 05:49 PM
  4. Squealing noise after underdrive pulley install...
    By bbfirebird in forum External Engine
    Replies: 1
    Last Post: 12-18-2005, 02:28 PM
  5. 2000 Z28 Noise from rear?
    By Big Z in forum Drivetrain
    Replies: 13
    Last Post: 12-13-2005, 01:27 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •