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Torque converter or flexplate? Any ideas will help....

CHA53R

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hi there, i recently had my engine swaped over, got it home and theres a rattle... the guy who swapped it swore blind its a piston while you guys said flexplate... i have un done the brace plate from trans to engine and made sure the bolts on the torque converter were tight. theres a bolt from trans to engine missing and one was loose, i put the y pipe back on and started it up... the rattle in it is definitly the flex plate or torque converter.. the flex plate has a slight wobble and has bits of teeth missing on the edge... any ideas on what the rattle is? cheers..
 

2DIE

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Either a cracked flex plate or lose bolt is the most common cause. You will need to drop out the auto to check it properly.
 

CHA53R

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had a torch under there and doesnt seem to be any cracks, it wobbles bad at low idle and the sound is worse, could anything in the torque converter be broken?
 

Brett_jjj

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Id get another second hand flex plate and converter and fit them.
 

CHA53R

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i have another flex plate off my old motor, might fish around for a torque converter then, is it worth getting a second hand one?
 

revhead001

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When the flex plate cracks, it will crack between the bolts on the mating face where it sits against the crank. It is a commonly misdiagnosed problem. It does produce the same sort of noise under load as a flogged piston. But as said by previous members, the trans needs to be removed.
 

Cheap6

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If it's wobbling then something is bent or broken. If you are going to swap the flex plate buy new bolts as they are torque to yield.
 

CHA53R

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no probs, doesnt make sound under load but noticed the other day it stumbles a bit at 100km/h only makes sound at low revs... going to replace the converter aswell... do you think it could be bearins in the crank?
 
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