torque converter banging??? Flywheel or tranny?? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 09-02-2006, 10:50 PM
boneyard Buick's Avatar
Member
 
Last photo:
Join Date: Oct 2004
Location: BC
Age: 28
Posts: 225
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
torque converter banging??? Flywheel or tranny??

hey guys
i got a 1989 blazer s10 with a 4.3L v6 and an older th350 transmission. The stock 700R4 blew up before i got the truck and it was replaced with a turbo 350 and a new torque converter. Lately when i've been starting the truck, theres a banging either in the starter or in the torque converter area. I put a 9/16 wrench on the bolt of the torque converter and moved it both ways, it will move about an inch and then stop and when you push the other way it goes about an inch then stops, im not sure if thats what th350's are supposed to do or if thats normal. Also i think it might be the starter because i was starting the truck the other day and something got in the way of the teeth for the flywheel and the teeth on the starter and made a *ping* noise and fell to the ground. The piece that came out is about 3/4" long and its a hollow pice of steel with a slit running down the side of it. Im not exactly sure if that would cause this problem and that piece that came out was something to do with the inside of the starter that allows the gear to come down and bang the flywheel or a clip to hold something in the starter, but i dont know where else this piece would come from, but im just posting it on the board to see if anybody had a clue. Also when i start the truck it has a rough "sounding" start and when its running its fine, but when i turn the truck off, the noise comes back until the crank stops moving and thats it. One of my buddies said it was the starter for sure, until i showed him that the torque converter moved about an inch either way then stopped, but im not certain if thats normal or not.. ANy help???? i have no idea and i just dont want to buying parts without fixing the problem. Thanks

    Advertisement
__________________
Ryan350 :thumbup:

Last edited by boneyard Buick; 09-02-2006 at 11:05 PM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 09-03-2006, 05:51 AM
tnsmith10's Avatar
when will it rain???
 
Last photo:
Join Date: Jul 2003
Location: where its very dry and dusty
Age: 43
Posts: 1,297
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
if the converter bolts r tight, then i would look at the flexplate, could be cracked. since the 4.3 is basically a 5.7 with 2 cyls. cut off, theres no difference in the back of the blocks.and the 350 shouldnt have any real issues, so thats where id start looking 1st.. gl
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-03-2006, 07:04 AM
nissan's Avatar
Registered User
 

Last journal entry: 1930 chevy ratrod pick-up
Last photo:
Join Date: Nov 2005
Location: Franklin,PA
Age: 63
Posts: 98
Wiki Edits: 0

Thanks: 5
Thanked 2 Times in 2 Posts
torque converter banging???

I had a chevelle that sounded like that and finally the flex plate gave out completely. it was cracked around the six bolts in the crank. if you unhook the coil an have someone crank the motor over watch the flex plate turn,it should not wobble or it is cracked.good luck
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 09-03-2006, 11:32 AM
boneyard Buick's Avatar
Member
 
Last photo:
Join Date: Oct 2004
Location: BC
Age: 28
Posts: 225
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
alright. i will give that a shot. Im hoping its the flexplate or torque converter and not the tranny. I will disconnect the coil and turn it over and see what happens. Will post results. Thanks
__________________
Ryan350 :thumbup:
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 09-04-2006, 02:45 AM
Known traffic menace
 
Join Date: Aug 2006
Location: Hohenwald Tn.
Age: 57
Posts: 82
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
T C banging

It sounds like the flywheel broke at the flange of the crank, I have seen this happen a few times. And as far as the metal piece that you found, check the starter, there is a piece there that limits the travel of the bendix and it is probaly what that piece of metal was or part of it. Hope this helps, good luck, Happy wrenching!!!, , Perry.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 09-04-2006, 03:07 AM
boneyard Buick's Avatar
Member
 
Last photo:
Join Date: Oct 2004
Location: BC
Age: 28
Posts: 225
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
hey guys
thanks for the help
but no one was right. LoL
It turns out that the flywheel bolts didnt have the washers on them, so the fywheel bolts backed out about an 1/8th each and the flywheel was really sloppy, but some of them were still tight so when i moved the flywheel by hand you couldnt notice it.

But when i found this out i just looked underneath to make sure once more and i seen the back of the crank imbetween the flywheel and i noticed the flywheel moved before the crank so thats when i started the tear down of the truck. But its fixed now, proper bolts and washers, starts and kills like a dream and the flywheel was not cracked at all. before i bought the truck the converter and flywheel were brand new.

Thanks for the help!
__________________
Ryan350 :thumbup:
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
torque converter to flexplate bolts?? gavinpierce Hotrodding Basics 4 04-20-2006 04:25 PM
Torque Converter Failure - TH350 blown81 Transmission - Rearend 1 10-16-2005 11:41 AM
Tranny update/Torque converter question RObs71Nova Transmission - Rearend 5 12-16-2004 09:37 AM
Removing flywheel to converter bolts in a 1958 Chevy Impala 348 Cast Iron Powerglide 1958imp348 Transmission - Rearend 9 11-22-2004 03:18 PM
C5 or Torque Converter Bad? k2mooch Transmission - Rearend 2 11-30-2003 08:27 PM


All times are GMT -6. The time now is 12:21 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.