Page 1 of 2 12 LastLast
Results 1 to 15 of 21

Thread: Torque converter test/check

  1. #1
    I can post! Club Member supra87's Avatar
    Join Date
    May 2009
    Location
    England - Lincolnshire
    Posts
    80
    Feedback
    0

    Torque converter test/check

    Hi guys as you may have seen I've had issues with a rattle on me na jap spec auto. we've narrowed it down to the torque converter. ive recently purchased a replacement on here from another member. now before I swap them over is there a way off checking it's working correctly some kind of test ect?

  2. #2
    I'm part of the furniture Authorised Trader Chris Wilson's Avatar
    Join Date
    Nov 2001
    Location
    England - Shropshire
    Posts
    31,499
    Feedback
    108 (100%)
    TC's usually work or they don't, and being full of oil are highly unlikely to rattle. I would suspect the flex plate is cracked or loose on the crank, or the TC bolts are not tight. Be sure whoever removes the gearbox understands the TC *MUST MUST MUST* come out on the gearbox, and unbolted from the flex plate. I have seen people think it should be left bolted to the flex plate....
    Regards, Chris Wilson. No PM's PLEASE, use e-mail!
    Race and performance road car servicing and preparation in north Shropshire. Race and road car engine building and tuning.
    Suspension development and geometry specialist, Supra work and other cars too! 07971-952084
    chris@chriswilson.tv

  3. #3
    I can post! Club Member supra87's Avatar
    Join Date
    May 2009
    Location
    England - Lincolnshire
    Posts
    80
    Feedback
    0
    Thanks Chris the engine and box was removed a couple of weeks ago all tc bolts were removed the gearbox was split but the tc stayed on the engine should this not of happend?

  4. #4
    Do Luck owning Club Member Swampy442's Avatar
    Join Date
    Feb 2006
    Location
    England - Lincolnshire
    Posts
    13,656
    Feedback
    50 (100%)
    No, you risk damage to the TC and the oil pump on the gearbox. Always leave the TC with the gearbox, and vice versa when fitting the TC should be fully seated on the gearbox splines before fitting
    I would gladly pay you 10 to never log onto this forum again, and I am serious. Scott M

    Quote Originally Posted by Chris Wilson View Post
    I did terrible things to girls I had only just met, and they loved it.

  5. #5
    I can post! Club Member supra87's Avatar
    Join Date
    May 2009
    Location
    England - Lincolnshire
    Posts
    80
    Feedback
    0
    The tc stayed on the engine even tho all bolts were removed the tc was locked onto the engine and would not pull off some spline inside the tc had to be turned to release the tc from the engine. Maybe this could be my issue somehow??

  6. #6
    I'm part of the furniture Authorised Trader Chris Wilson's Avatar
    Join Date
    Nov 2001
    Location
    England - Shropshire
    Posts
    31,499
    Feedback
    108 (100%)
    There's every chance the oil pump in the front cover of the gearbox is now damaged, every chance the oil pump seal is knackered, and a good chance the flex plate is now bent or cracked. The TC *ALWAYS* has to be unbolted from the flex plate, via the rubber covered access aperture, then pushed fully into the gearbox before trying to unbolt and remove the box itself. You may even have damaged the TC internally.
    Regards, Chris Wilson. No PM's PLEASE, use e-mail!
    Race and performance road car servicing and preparation in north Shropshire. Race and road car engine building and tuning.
    Suspension development and geometry specialist, Supra work and other cars too! 07971-952084
    chris@chriswilson.tv

  7. #7
    Built not bought! Club Member and1c's Avatar
    Join Date
    Dec 2005
    Location
    England - Derbyshire
    Posts
    1,140
    Feedback
    8 (100%)
    Is this the same work done by the company who replaced the main bearings? It's gearbox 101 taking the tc out with the box...

  8. #8
    I'm part of the furniture Authorised Trader Chris Wilson's Avatar
    Join Date
    Nov 2001
    Location
    England - Shropshire
    Posts
    31,499
    Feedback
    108 (100%)
    Given the lack of room in the transmission tunnel it was probably an epic battle getting the box out with the TC on the flex plate, and even more of one putting it back and aligning the TC splines and especially the oil pump drive dogs. I fear the worst and would replace box, TC and flex plate.
    Regards, Chris Wilson. No PM's PLEASE, use e-mail!
    Race and performance road car servicing and preparation in north Shropshire. Race and road car engine building and tuning.
    Suspension development and geometry specialist, Supra work and other cars too! 07971-952084
    chris@chriswilson.tv

  9. #9
    I can post! Club Member supra87's Avatar
    Join Date
    May 2009
    Location
    England - Lincolnshire
    Posts
    80
    Feedback
    0
    Let's clear a few things up maybe I wasn't clear enough.All the tc bolts were removed via the inspection plate when they were first separated nothing is bent nothing has split the gearbox changes gear perfectly nothing leaks.what I'm saying is when the engine and box were split the tc stayed on the engine this wasn't intentionally it's just what happend the box split from the engine with out and struggle both engine and box were out the car when it was split the reason both came out is we thought the rattle was the bottom end bearing so all bearings in the bottom end have been replaced car has been put bk together and is currently driving but I've still got this slight rattle that must be tc related I did a gearbox flush 4 weeks prior to this problem the oil that came out was well over due I'm thinking the new oil has loosened some debris allowing something in the tc to rattle obviously I'm just guessing at this point as I'm running out of ideas??

  10. #10
    Built not bought! Club Member and1c's Avatar
    Join Date
    Dec 2005
    Location
    England - Derbyshire
    Posts
    1,140
    Feedback
    8 (100%)
    Ahh so they were out of the car when split? Not ideal but this is a good article on confirming if its torque converter or not

    http://etereman.com/blog/transmissio...r-all-vehicles

  11. #11
    I can post! Club Member supra87's Avatar
    Join Date
    May 2009
    Location
    England - Lincolnshire
    Posts
    80
    Feedback
    0
    Cheers I'll have a read much appreciated I'll post a sound clip up so you can have a listen it's not the best but you can hear the rattle.
    Last edited by supra87; 14-09-17 at 08:43.

  12. #12
    I can post! Club Member supra87's Avatar
    Join Date
    May 2009
    Location
    England - Lincolnshire
    Posts
    80
    Feedback
    0

  13. #13
    Built not bought! Club Member and1c's Avatar
    Join Date
    Dec 2005
    Location
    England - Derbyshire
    Posts
    1,140
    Feedback
    8 (100%)
    Sounds like bottom end to me but very hard to tell. Drop the oil out and check it with a magnet for anything untoward would be a simple thing to try first. Is the oil pressure all good? . Flex plate bolts I'm guessing are correctly tightened? This can be checked relatively easily anyway, worth it to be sure.

  14. #14
    I can post! Club Member supra87's Avatar
    Join Date
    May 2009
    Location
    England - Lincolnshire
    Posts
    80
    Feedback
    0
    All bearings were replaced in the bottom end a few weeks ago all the tc bolts tightend to the specific torque settings.

  15. #15
    Built not bought! Club Member and1c's Avatar
    Join Date
    Dec 2005
    Location
    England - Derbyshire
    Posts
    1,140
    Feedback
    8 (100%)
    Was the engine stripped and rebuilt then? Reground crank and oversized bearings? Or just replaced damaged bearings for new ones stock sized?

Page 1 of 2 12 LastLast

Posting Permissions

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