Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

Is it the converter?

Thread Tools
 
Search this Thread
 
Old Feb 20, 2012 | 07:01 PM
  #1  
01BlueSS1995's Avatar
Thread Starter
TECH Apprentice
 
Joined: Dec 2011
Posts: 329
Likes: 0
From: Loganville, Georgia
Default Is it the converter?

When i put it into drive there is a noticeable knocking that isnt coming from the engine, i can feel it catch hard and it a knock when playing with it in 1st. My best guess would be the converter but im not sure. Opinions? Answers?
Thanks!
Reply
Old Feb 20, 2012 | 07:36 PM
  #2  
Vince B's Avatar
Moderator
iTrader: (1)
 
Joined: Sep 2005
Posts: 8,633
Likes: 0
From: Bloomingdale Illinois
Default

Sounds like a broken/cracked flex plate IMO.
Reply
Old Feb 20, 2012 | 07:37 PM
  #3  
Circle-D's Avatar
FormerVendor
iTrader: (21)
 
Joined: Feb 2006
Posts: 2,474
Likes: 14
From: Houston, TX
Default

I agree. Sounds like a flexplate.

Chris
Reply
Old Feb 20, 2012 | 08:09 PM
  #4  
01BlueSS1995's Avatar
Thread Starter
TECH Apprentice
 
Joined: Dec 2011
Posts: 329
Likes: 0
From: Loganville, Georgia
Default

Gotcha! thanks. now how in the hell did i do that?
Reply
Old Feb 20, 2012 | 09:31 PM
  #5  
Vince B's Avatar
Moderator
iTrader: (1)
 
Joined: Sep 2005
Posts: 8,633
Likes: 0
From: Bloomingdale Illinois
Default

It just happens. Keep in mind this component does just what its called... it flex's thus called a flex plate. After repeated use sooner or later it breaks from flexing!
Reply
Old Feb 21, 2012 | 03:43 PM
  #6  
01BlueSS1995's Avatar
Thread Starter
TECH Apprentice
 
Joined: Dec 2011
Posts: 329
Likes: 0
From: Loganville, Georgia
Default

so what can happen if i dont fix it quickly enough?
Reply
Old Feb 21, 2012 | 06:34 PM
  #7  
JRENIGAR's Avatar
10 Second Club
10 Year Member
iTrader: (37)
 
Joined: Dec 2010
Posts: 2,069
Likes: 2
From: 72396
Default

Mine did this, 1st time it was a cracked flexplate, 2nd time it was a loose converter bolt. Use blue locktite...
Reply
Old Feb 21, 2012 | 06:49 PM
  #8  
philsblwnz28's Avatar
TECH Resident
iTrader: (10)
 
Joined: Feb 2008
Posts: 921
Likes: 3
From: Kissimmee
Default

Get a TCI Flexplate and use blue loctite....Same thing happened to me and it was a small crack and the bolt holes were oblong
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Feb 21, 2012 | 08:23 PM
  #9  
senicalj4579's Avatar
10 Second Club
20 Year Member
Liked
Loved
Community Favorite
iTrader: (41)
 
Joined: Jan 2006
Posts: 5,260
Likes: 24
Default

Mine didnt break and cause me problems but it started to crack above all tc bolt holes through the teeth.
Its tough to see but theres a crack there.
Reply
Old Feb 21, 2012 | 09:06 PM
  #10  
01BlueSS1995's Avatar
Thread Starter
TECH Apprentice
 
Joined: Dec 2011
Posts: 329
Likes: 0
From: Loganville, Georgia
Default

thanks for the input guys, i guess ill start with the u joint before tearing anything apart. i really dont need this thing grenading. lol
Reply
Old Feb 21, 2012 | 09:36 PM
  #11  
senicalj4579's Avatar
10 Second Club
20 Year Member
Liked
Loved
Community Favorite
iTrader: (41)
 
Joined: Jan 2006
Posts: 5,260
Likes: 24
Default

Thats right. You dont. Do a search and you will come across a thread where theres some pretty nasty pics of fp going through the exhaust and such. You dont want that to be your legs.
Reply
Old Feb 22, 2012 | 01:06 AM
  #12  
01ssreda4's Avatar
TECH Senior Member
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (96)
 
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
Default

Could be a converter bolt backing out. I have seen this happen before also and it cause a knocking noise.
Reply
Old Feb 22, 2012 | 05:19 PM
  #13  
mrvedit's Avatar
Moderator
15 Year Member
Photogenic
Photoriffic
Community Favorite
 
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
Default

Originally Posted by 01ssreda4
Could be a converter bolt backing out. I have seen this happen before also and it cause a knocking noise.
You only need to drop the starter motor to check the three converter bolts. This can give you a good view of the flexplate too.
The wimpy-looking stock flexplate scares me; I installed the sturdy and SFI-rated TCI one.
Reply




All times are GMT -5. The time now is 03:46 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE