1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Trouble Logging In or Staying Logged In?

    CLEAR YOUR BROWSER COOKIES! More info about this can be found here. If you still have trouble after clearing your browser's cookies and cache, reply to that thread and tell us what browser you're using and what device you're using.

1G Timing belt whine/belt walking

Posted by tudds2k, Aug 9, 2018

Please Support STM Tuned
  1. tudds2k

    tudds2k Proven Member

    95
    3
    Joined Aug 28, 2008
    Long Island, New York
    Hey everyone,
    I have been changing my timing belt on my 1990 1g and life got in the way half way through. It’s been making a whining noise when I rev it. I have re tension the belt so many times.
    After searching and hearing 500 different things, I have no idea.
    Some of the pulleys are rusty. I figured I would ask here before buying new ones again.
    The belt wobbled a little but never goes off the cam gears edge. It only whines when revving it.
    I have a video I will post after this.
    Any ideas ? Could the balance shaft be too tight ? Could the idler pulley go bad for being outside with no timing cover for a year ?

    Cliff notes:
    Oem timing components changed and gates blue belt.
    Makes whining noise when rev and belt walks a little.
    Don’t remember what it sounded like before

    Thank you for any input you have.
     

    Log in/Register to remove ads

    Attached Files:

    Last edited: Aug 9, 2018
    My DSM:
    1990 Mitsubishi Eclipse GSX

    Street Build

    14b   manual
    Loading...

    Featured Products from our Supporting Vendors

  2. tudds2k

    tudds2k Proven Member

    95
    3
    Joined Aug 28, 2008
    Long Island, New York


    That chirping noise just started. I’m going to see if it goes away taking the belt off the alternator.
    EDIT: I took the belt off and it’s still chirping
     
    Last edited: Aug 9, 2018
    My DSM:
    1990 Mitsubishi Eclipse GSX

    Street Build

    14b   manual
    Loading...
  3. jakk220

    jakk220 Proven Member

    1,061
    169
    Joined Nov 13, 2010
    Akron, Ohio
    I would be checking the tensioner arm and the post that it goes on for play. A worn tensioner arm could cause it. I would also check all the other pulleys for play as well. Something looks off with the idler pulley. Not to mention it is in rough shape. I would not use it.
     
    My DSM:
    1997 Eagle Talon N/T (sold)

    Autocross Build

      manual
    1993 Mitsubishi Eclipse GSX

    Street Build

    16g   manual
    Loading...
    tudds2k likes this.
  4. er82

    er82 Proven Member

    217
    24
    Joined Apr 18, 2014
    Sacramento, California
    I've had a new gates rpm belt walk. So then went with evo9 belt and it was good. Do you have another belt to try? To help in eliminating possible causes.
     
    My DSM:
    1992 Mitsubishi Galant VR-4

    Street Build

    12.768 @ 112.99 MPH
    Loading...
  5. tudds2k

    tudds2k Proven Member

    95
    3
    Joined Aug 28, 2008
    Long Island, New York
    I guess I can install the old one to check. I’m more worried about the noise than anything. I’m going to check my balance shaft belt because I remember making it very tight
     
    My DSM:
    1990 Mitsubishi Eclipse GSX

    Street Build

    14b   manual
    Loading...
  6. jakk220

    jakk220 Proven Member

    1,061
    169
    Joined Nov 13, 2010
    Akron, Ohio
    The hell with the whinining noise. That belt is going to fall off if you leave it like that. I'm not saying don't check the balance shaft belt tension, but you need to find why that belt is wobbling before it has you wobbling into the machine shop carrying your trashed head.
     
    My DSM:
    1997 Eagle Talon N/T (sold)

    Autocross Build

      manual
    1993 Mitsubishi Eclipse GSX

    Street Build

    16g   manual
    Loading...
  7. ChessmoDSM

    ChessmoDSM Proven Member

    167
    85
    Joined Apr 22, 2017
    Burlington, Vermont
    Don't just change the belt when you do a timing job, buy a kit and do the WHOLE job, sure its like $500 for the parts(OEM with everything but the belt IMHO, I like the EVO and Gates Blue), but its one of the most important aspects of our cars, do it right the 1st time and be done..
     
    Dreams Realized likes this.
  8. chrysler kid

    chrysler kid Proven Member

    1,552
    366
    Joined Dec 20, 2002
    Mckinney, Texas
    Show me a picture of your timing setup down low with the harmonic balancer off.

    For the belt to make that much noise your hydraulic tensioner has failed. You should be able to slide in the grenade pin immediately after tuning off the motor. If you can't, your tensioner pulley is over rotated and your timing arm is bottoming out on the tensioner body.
     
    Last edited: Aug 11, 2018
    Loading...
  9. tudds2k

    tudds2k Proven Member

    95
    3
    Joined Aug 28, 2008
    Long Island, New York
    It seems like I’m chasing a bunch of issues. Once the noise goes away, I’ll find out why it’s walking. I’m not going to put it together with it still moving around like that

    I changed everything
    The pin still slides in and out freely. I checked the space from the tension arm to the tensioner body with a few drill bits as feeler gauges 3.8-4.4mm
     
    My DSM:
    1990 Mitsubishi Eclipse GSX

    Street Build

    14b   manual
    Loading...
  10. m_0ney_pit

    m_0ney_pit Supporting Member

    571
    18
    Joined Jan 12, 2007
    Reading, Pennsylvania
    The chirping is most likely your alt or ps pulley system. Take the pulleys off and wire wheel them clean they have hardened rubber on them that makes even new belts slip.

    The wining is normal for the Kevlar gates belts. The oe gates belt is quieter and oem Mitsubishi is the quietest. I know someone's gonna be like " didn't you know gates makes the oem Mitsubishi belt"? But just stating observations from using different ones over the years.

    Use the oem grenade pin and tension until the pin is "slippy" loose meaning has a tiny bit of resistance when you go to pull it out. Tensioned so the resistance is from the arm pushing down on the tensioner not the tensioner pushing up on the arm.

    It will change as you rotate the motor so rotate a few times and recheck.
     
    My DSM:
    1998 Eagle Talon TSi AWD

    Street Build

    14b   automatic
    1999

    Street Build

    16g   manual
    1999 Mitsubishi Eclipse GST

    Street Build

    14b   manual
    Loading...
  11. brian9397gsx

    brian9397gsx Proven Member

    1,057
    68
    Joined Apr 28, 2008
    sioux city, Iowa
    Walking off is most likely a worn timing arm. The balance shaft belt wouldn't have anything to do with it walking off. I'd check for slop in the arm take all the pulleys off and inspect also with the amount of surface rust on the outer edge of that idler I'd make sure the bearings inside are good.
    The bushing in the arm likes to wear over time causing the arm to cant off to the side making it walk off the gear.
     
    My DSM:
    brian9397gsx 1993 Mitsubishi Eclipse GSX

    19.80 @ 35.55 MPH
    Loading...
    chrysler kid likes this.
  12. chrysler kid

    chrysler kid Proven Member

    1,552
    366
    Joined Dec 20, 2002
    Mckinney, Texas
    I'm with Brian, the timing arm itself is damaged and not riding the tensioner correctly.

    We have seen quite a few of those lately with 6bolt engines. The arm has a divot or bend in it that causes the pulley to sit off kilter
     
    Loading...
  13. tudds2k

    tudds2k Proven Member

    95
    3
    Joined Aug 28, 2008
    Long Island, New York
    Ok I’ll find a new arm. I know they are discontinued :(
     
    My DSM:
    1990 Mitsubishi Eclipse GSX

    Street Build

    14b   manual
    Loading...
  14. jakk220

    jakk220 Proven Member

    1,061
    169
    Joined Nov 13, 2010
    Akron, Ohio
    Good luck finding a new one. I had to get a good condition used one.
     
    My DSM:
    1997 Eagle Talon N/T (sold)

    Autocross Build

      manual
    1993 Mitsubishi Eclipse GSX

    Street Build

    16g   manual
    Loading...
  15. tudds2k

    tudds2k Proven Member

    95
    3
    Joined Aug 28, 2008
    Long Island, New York
    If I’m going to change the tension arm and idler pulley. I might as well get everything else new I’m thinking. I would rather change everything in one shot in one day then have an idler that is new but a tensioner that has been in the engine bay for a year.
    I think I’m going to buy the oem Kevlar belt this time.
     

    Attached Files:

    My DSM:
    1990 Mitsubishi Eclipse GSX

    Street Build

    14b   manual
    Loading...
  16. linksys42

    linksys42 Proven Member

    395
    28
    Joined Jan 8, 2003
    Union, Missouri
    The machined post that the tensioner arm rides on also can wear and caused the issue you're havin, as jakk220 has said in above post. So just keep that in mind if you replace the tensioner arm and you're still having the issue. Below is a good thread link on the issue.
    http://www.dsmtuners.com/threads/timing-belt-off-to-one-side.514152/
     
    My DSM:
    Loading...
  17. brian9397gsx

    brian9397gsx Proven Member

    1,057
    68
    Joined Apr 28, 2008
    sioux city, Iowa

    Just stopping in to state the same. Today I took my car out for its first 20 miles to do some logging. Went well but I thought I'd check my belt just to be safe and the damn thing had the inner edge chewed up. Everything is new I spent the next couple hours taking everything out and noticed the are had some slop in and out. I grabbed another bracket and put my arm on it no slop. That stupid post it rides on pushed out some how about 1/8 of an inch. Fixed that issue and now the belt is where its supposed to be and not throwing rubber.
     
    My DSM:
    brian9397gsx 1993 Mitsubishi Eclipse GSX

    19.80 @ 35.55 MPH
    Loading...
    1990TSIAWDTALON likes this.
  18. tudds2k

    tudds2k Proven Member

    95
    3
    Joined Aug 28, 2008
    Long Island, New York
    I have an extra mount and arm. I'll check them out.
     
    My DSM:
    1990 Mitsubishi Eclipse GSX

    Street Build

    14b   manual
    Loading...
  19. tudds2k

    tudds2k Proven Member

    95
    3
    Joined Aug 28, 2008
    Long Island, New York
    I bought every arm/bracket I found find on google. They are getting canceled left and right. I’m pretty sure my card went to some shady websites too
    This sucks
     
    My DSM:
    1990 Mitsubishi Eclipse GSX

    Street Build

    14b   manual
    Loading...
  20. brian9397gsx

    brian9397gsx Proven Member

    1,057
    68
    Joined Apr 28, 2008
    sioux city, Iowa
    Yeah I went looking also I was going to pick some up just in case and no luck either.
     
    My DSM:
    brian9397gsx 1993 Mitsubishi Eclipse GSX

    19.80 @ 35.55 MPH
    Loading...
  21. tudds2k

    tudds2k Proven Member

    95
    3
    Joined Aug 28, 2008
    Long Island, New York
    I checked my extra arm and there’s a wear mark where the arm and tensioner meet. There’s no play if I wiggle it though.
     
    My DSM:
    1990 Mitsubishi Eclipse GSX

    Street Build

    14b   manual
    Loading...
  22. linksys42

    linksys42 Proven Member

    395
    28
    Joined Jan 8, 2003
    Union, Missouri
    If you can't find a new one to buy and you want it fixed you can find a local machine shop to weld material to fill it and then they can cut it back to flush. To get rid of the divit. I would take a measurement with a caliper (before you have the work done) to check there work after you get it back. I don't like the idea of cutting the arm material away to get rid of the divit without adding material. But that's just me.
    Good luck
     
    My DSM:
    Loading...
  23. tudds2k

    tudds2k Proven Member

    95
    3
    Joined Aug 28, 2008
    Long Island, New York
    Bought everything again. Got a used tensioner arm and mount from performance part out. Went with the oem Kevlar belt instead of gates
     

    Attached Files:

    My DSM:
    1990 Mitsubishi Eclipse GSX

    Street Build

    14b   manual
    Loading...
  24. tudds2k

    tudds2k Proven Member

    95
    3
    Joined Aug 28, 2008
    Long Island, New York
    You know how when you lose something and buy a new one, you find the old one. I just got shipping confirmation my brand new mount and arm was shipped
     
    My DSM:
    1990 Mitsubishi Eclipse GSX

    Street Build

    14b   manual
    Loading...
  25. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    3,118
    985
    Joined Nov 14, 2013
    Independence, Kansas
    Can you say where you found one? I am still looking too.
     
    My DSM:
    1992 Eagle Talon TSi AWD

    Street Build

    14b   automatic
    1990 Eagle Talon TSi AWD

    13.620 @ 108.460 MPH
    1990 Eagle Talon TSi AWD

    13.612 @ 107.760 MPH
    Loading...

Share This Page

Loading...


Log in/Register to remove this ad

Support Vendors who Support the DSM Community
Ace Race Parts Archer Fabrication Best Used Tires Boostin Performance ECM Tuning ExtremePSI Feal Suspension Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Miller Import Parts Morrison Fabrications OHM Racing RockAuto SouthBay Fuel Injectors STM Tuned Tire Rack VR Speed Factory White Shed Speed