Page 1 of 2 12 LastLast
Results 1 to 20 of 29

Chirping noise: 3 different shops cant diagnose

This is a discussion on Chirping noise: 3 different shops cant diagnose within the General Help forums, part of the LSx Technical Help Section category; Can anyone help me possibly diagnose this annoying chirping cricket noise -Usually only hear it once car is fully warmed ...

  1. #1
    Junior Member
    Join Date
    Sep 2009
    Location
    Austin,TX
    Posts
    32

    Blue
    1999 Z28

    Angry Chirping noise: 3 different shops cant diagnose

    Can anyone help me possibly diagnose this annoying chirping cricket noise

    -Usually only hear it once car is fully warmed up

    -Gets much louder when accelerating, especially 55mph +

    -When I come to stop after hearing the noise, and put the car in PARK, the noise disappears or gets very quiet. I put it back in Drive, noise comes right back

    Could this be transmission related ?

  2. #2
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    it could be tranny related. Notice any vibrations in the car or anything like that? I would narrow down where the sound is coming from before trying to diagnose it. Have someone get in it and put the car in drive and then crawl around and see if you can find out exactly where the noise is coming from. Chirps are almost always belt/pulley related so I would start there first.

  3. #3
    LSwut tep98ws6's Avatar
    Join Date
    Jun 2009
    Location
    Saint Louis, MO
    Posts
    1,705

    Arctic White & Black
    '98 WS6 M6 - SWAPTIME!

    i have the same exact issue with mine. i replaced my drive belt pulley. i guess tensioners next. is it an auto or manual? could be a throw-out bearing ... i've been told tho that if it's the throw out to deal with it until the clutch goes out because it's a huge pain in the butt

  4. #4
    Member luvmyz28's Avatar
    Join Date
    Feb 2007
    Location
    Council Bluffs IA
    Posts
    192

    nbm
    99 z28

    I had a similar chirping sound. I would change the main drive and a/c belts and it would go away for a while then come back about once a year. this last time I replaced the idler/tensioner pulleys instead of getting new belts cuz the belts had less than 5k miles on them so I figured they cant be stretched already. so far the chirping is completely gone and I will say that the ac tensioner was worn the most. the tensioners are pricey though. about 70 for the main drive belt and I wanna say 50 for the a/c. so ya might wanna try spraying them 1 by1 to try and pinpoint it. just be careful not to let it drip on the belt. I replaced mine last spring so we'll see I guess. also I do remember someone posting on here about how to put new bearings in the pulleys to save ya a lil money if that turns out to be your problem.

  5. #5
    LSwut tep98ws6's Avatar
    Join Date
    Jun 2009
    Location
    Saint Louis, MO
    Posts
    1,705

    Arctic White & Black
    '98 WS6 M6 - SWAPTIME!

    Quote Originally Posted by luvmyz28 View Post
    I had a similar chirping sound. I would change the main drive and a/c belts and it would go away for a while then come back about once a year. this last time I replaced the idler/tensioner pulleys instead of getting new belts cuz the belts had less than 5k miles on them so I figured they cant be stretched already. so far the chirping is completely gone and I will say that the ac tensioner was worn the most. the tensioners are pricey though. about 70 for the main drive belt and I wanna say 50 for the a/c. so ya might wanna try spraying them 1 by1 to try and pinpoint it. just be careful not to let it drip on the belt. I replaced mine last spring so we'll see I guess. also I do remember someone posting on here about how to put new bearings in the pulleys to save ya a lil money if that turns out to be your problem.
    good to know

  6. #6
    Junior Member
    Join Date
    Sep 2009
    Location
    Austin,TX
    Posts
    32

    Blue
    1999 Z28

    Thanks for the info

    The problem is the noise is not constant so very hard to pinpoint

    I may just start with a new belt and go from there

  7. #7
    Member gbd99ws6's Avatar
    Join Date
    Jan 2009
    Location
    Florida
    Posts
    124

    silver
    1999 T/A WS6 A4

    I ended up using GM belts to shut mine up, every other belt started chirpin in a day or two. Mechanic I konw told me some of these cars will only be quiet with GM belts on them. I know expensive, but I couldn't stand the chirpin, and had already replaced everything else. Been silent for 3 years now.

  8. #8
    Junior Member
    Join Date
    Aug 2009
    Location
    Bay Area Cali
    Posts
    86

    White
    1995 Camaro Z28

    You have crickets in your car.

  9. #9
    Member DaddySS's Avatar
    Join Date
    Oct 2005
    Location
    Bergen Co. NJ
    Posts
    590

    Black
    2000 Camaro SS Conv.

    Generally the symptoms you describe are torque converter/flexpate related. Can you get it up in th air and try to pinpoint where it's coming from?

  10. #10
    Junior Member
    Join Date
    Sep 2009
    Location
    Austin,TX
    Posts
    32

    Blue
    1999 Z28

    Quote Originally Posted by DaddySS View Post
    Generally the symptoms you describe are torque converter/flexpate related. Can you get it up in th air and try to pinpoint where it's coming from?
    Wouldnt the noise be constant if it was the torque converter or flexplate ?

    I would need to have a shop get it up in the air there is no way I can do it

  11. #11
    Member DaddySS's Avatar
    Join Date
    Oct 2005
    Location
    Bergen Co. NJ
    Posts
    590

    Black
    2000 Camaro SS Conv.

    No, they generally make more noise under load.

  12. #12
    Junior Member
    Join Date
    Sep 2009
    Location
    cave city ky 42127
    Posts
    3

    pewer
    2000 corvete

    Installed four different brands of belts, goodyear gatorback stopped the chirping.

  13. #13
    James Bond Spikito's Avatar
    Join Date
    Aug 2007
    Location
    Texas
    Age
    30
    Posts
    4,546

    2001 3.8 Black - sold
    2000 SS Black M6

    my first thought is A/C compressor....just my .02

  14. #14
    With my car, the noise apparently was belt-related and was most noticeable in the warm-up period.

  15. #15
    Moderator Cutlass's Avatar
    Join Date
    Apr 2008
    Location
    Madison, WI
    Posts
    6,997

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Quote Originally Posted by DaddySS View Post
    Generally the symptoms you describe are torque converter/flexpate related. Can you get it up in th air and try to pinpoint where it's coming from?
    How does a torque converter or flexplate chirp?

    Quote Originally Posted by Spikito View Post
    my first thought is A/C compressor....just my .02
    Same question, how does an AC compressor chirp?

  16. #16
    Junior Member
    Join Date
    Sep 2009
    Location
    Austin,TX
    Posts
    32

    Blue
    1999 Z28

    Quote Originally Posted by Cutlass View Post
    How does a torque converter or flexplate chirp?



    Same question, how does an AC compressor chirp?
    Cutlass so you think it is most definitely belt/pulley/tensioner related ?

  17. #17
    Member DaddySS's Avatar
    Join Date
    Oct 2005
    Location
    Bergen Co. NJ
    Posts
    590

    Black
    2000 Camaro SS Conv.

    Quote Originally Posted by Cutlass View Post
    How does a torque converter or flexplate chirp?



    Same question, how does an AC compressor chirp?
    If there are cracks in the flexplate, the metal rubbing together makes a chirping noise.
    The A/C compressor ahs a clutch, bearings etc. but I was basing the thoughts on the fact that you said it gets quiet in Park and makes the noise at speed - especially accelerating. Normal belt or pulley noises don't do that - they are usyually most prominent at idle and rarely happen when driving at speed.

  18. #18
    Moderator Cutlass's Avatar
    Join Date
    Apr 2008
    Location
    Madison, WI
    Posts
    6,997

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Quote Originally Posted by CJoel View Post
    Cutlass so you think it is most definitely belt/pulley/tensioner related ?
    I can't be absolutly sure...I'm not there to listen to it.
    Quote Originally Posted by DaddySS View Post
    If there are cracks in the flexplate, the metal rubbing together makes a chirping noise.
    The A/C compressor ahs a clutch, bearings etc. but I was basing the thoughts on the fact that you said it gets quiet in Park and makes the noise at speed - especially accelerating. Normal belt or pulley noises don't do that - they are usyually most prominent at idle and rarely happen when driving at speed.
    I don't know, maybe. The last cracked flexplate I heard made more if a rattle noise. It was a co-workers 04ish 1500HD pickup.

  19. #19
    Junior Member
    Join Date
    Sep 2009
    Location
    Austin,TX
    Posts
    32

    Blue
    1999 Z28

    Thumbs down

    FYI, the noise only started after the dealer re-installed the engine after pulling it to replace leaking oil seals and water pump. All the engine oil seals were replaced, as well as the water pump.

    Every shop tells me they either cant hear it, or they hear it and it goes away

    This is such a pain because it near impossible to diagnose

    Only happens after car is warmed up and at speeds of 55- 65 mph

    Sometimes the noise will continue after a run on the highway, when I come to a stop is when I put the car in Park or Neutral, the noise will disappear 90% of time

    What exactly engages/disengages when the transmission is shifted from Drive to Park/Neutral ?


    Thanks to everyone who contributes to this thread

  20. #20
    old timer blue02Z's Avatar
    Join Date
    Sep 2005
    Location
    Texas
    Age
    31
    Posts
    3,805

    Navy Blue Metallic
    2002 Z28

    i say the torque converter. is it a chirp or more of a whine? record it and post it up. could also be a torington brearing in the trans about to let go. i know peeps have different ways to explain noises thats why i say record it

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Help: Me diagnose a problem......
    By clg82 in forum Firebird / WS6
    Replies: 12
    Last Post: 07-27-2010, 02:48 PM
  2. Chirping Noise
    By SilentStriker07 in forum Firebird / WS6
    Replies: 2
    Last Post: 02-06-2007, 06:50 AM
  3. Chirping noise from belts not going away
    By chris5 in forum General Help
    Replies: 20
    Last Post: 04-10-2006, 04:40 PM
  4. Diagnose Rod Knock?!?
    By revlimit in forum Internal Engine
    Replies: 1
    Last Post: 10-09-2005, 01:14 AM
  5. Diagnose this problem please….
    By topgun1851 in forum Forced Induction
    Replies: 10
    Last Post: 08-06-2005, 12:34 AM

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
  •