22RE scraping or metallic grinding sound at idle

Discussion in 'Engine/Drivetrain' started by drumsnspace, Jul 3, 2020.

  1. drumsnspace

    drumsnspace Newbie

    Joined:
    Oct 15, 2015
    Messages:
    6
    Likes Received:
    0
    Truck:
    1990 Base 22r
    Hi all,

    Have a 1991 Longbed pickup with a 22RE running the LCE "tune up" kit and a Doug Thorley header, otherwise stock. Truck had about 132k miles and just recently, it's been making a mechanical grinding or scraping noise.

    I've got a stethoscope to try and pinpoint the sound but I can't quite track it. I've pulled all the belts, still there. Pulled the valve cover, t chain and guides look brand new (only 12k miles on em), didn't see any metal shavings in the oil when I pulled the valve cover. Sounds loudest at the distributor, so I thought maybe the distributor bearing. I bought a Spectra Premium O'Reilly's special and the noise is still there.

    It's only noticeable or even audible around 1k-1.7k rpm loudest at 1.2k. I can hear most clearly on the front or driverside of the engine bay and I can hear it somewhat on the bellhousing with the stethoscope. It's also loud enough to hear in the cab with the windows rolled up. When I'm in stop and go/ accelerating from a stop.

    So I've isolated the fact that it's not the distributor bearing, not the timing chain or guides, not any of the pulleys/ bearings. Considering it's very rhythmic with the speed of the engine and then fades away at certain engine speeds has me confused.

    Here's a video I took:
     
  2. Justin Danger

    Justin Danger Toyotaholic

    Joined:
    Aug 6, 2016
    Messages:
    1,097
    Likes Received:
    362
    Location:
    Bay Area Peninsula
    Truck:
    1986 Toyota Xtra cab SR5 Turbo 22rte
    is it automatic or manual? I've heard of bad torque converters making a squealing noise at certain RPMs.
     
  3. drumsnspace

    drumsnspace Newbie

    Joined:
    Oct 15, 2015
    Messages:
    6
    Likes Received:
    0
    Truck:
    1990 Base 22r
    Sorry, should've mentioned, W55 trans. Makes the noise if clutch is in or out.
     
  4. jetas

    jetas Grand Toyotaholic

    Joined:
    Mar 26, 2009
    Messages:
    6,654
    Likes Received:
    1,089
    Location:
    Oxnard, CA
    Truck:
    72.5 Hilux
    Is the starter solenoid stuck out?
     
  5. drumsnspace

    drumsnspace Newbie

    Joined:
    Oct 15, 2015
    Messages:
    6
    Likes Received:
    0
    Truck:
    1990 Base 22r
    Haven't been having any starter issues, but what's the best way to check that?
     
  6. Justin Danger

    Justin Danger Toyotaholic

    Joined:
    Aug 6, 2016
    Messages:
    1,097
    Likes Received:
    362
    Location:
    Bay Area Peninsula
    Truck:
    1986 Toyota Xtra cab SR5 Turbo 22rte
    you can jump the starter solenoid to see if it engages and disengages properly
     
  7. Lee Gin

    Lee Gin Newbie

    Joined:
    Feb 8, 2018
    Messages:
    9
    Likes Received:
    2
    It might be your alternator. If the belt is too tight it will put strain on the bearings and wear it out
     
  8. Justin Danger

    Justin Danger Toyotaholic

    Joined:
    Aug 6, 2016
    Messages:
    1,097
    Likes Received:
    362
    Location:
    Bay Area Peninsula
    Truck:
    1986 Toyota Xtra cab SR5 Turbo 22rte
    he mentioned that it made the noise even with the alternator belt off
     
    jetas likes this.
  9. Liquidhandwash

    Liquidhandwash Enthusiast

    Joined:
    May 19, 2018
    Messages:
    252
    Likes Received:
    105
    Location:
    Northen VIC
    Truck:
    1980 diesel
    A couple of things to try, put your hand on the starter motor while it's making the noise, You will feel the vibration if the starter is the problem. Pull all the spark plugs out and turn it over by hand, you may feel it grinding somewhere.
    Pull the starter off and have a look at the flywheel ring gear, there may be a bolt come out of the clutch and rattling a round in there. To me it sounds like the timing chain, but very hard to tell from the video.
    Have a look at this https://old.lcengineering.com/LCTechPages/A Good Intention With A Bad Result.pdf
     
    Last edited: Jul 4, 2020
  10. Erwin Merida

    Erwin Merida Toyotaholic

    Joined:
    Sep 18, 2016
    Messages:
    1,003
    Likes Received:
    321
    Location:
    Long Beach, California
    Truck:
    LEXXXI - angry '93 ShortBed
    is this the type of sound you're experiencing
     
    Last edited: Mar 2, 2021
  11. Erwin Merida

    Erwin Merida Toyotaholic

    Joined:
    Sep 18, 2016
    Messages:
    1,003
    Likes Received:
    321
    Location:
    Long Beach, California
    Truck:
    LEXXXI - angry '93 ShortBed
    Try removing the clutch fan!
     
    Jim Thompson likes this.
  12. Jim Thompson

    Jim Thompson Member

    Joined:
    Jan 21, 2018
    Messages:
    53
    Likes Received:
    5
    what did you figure out ?
     

Share This Page