torque converter question - is it supposed to knock?

[hack500]

alright just out of the blue today after my truck , which has a chevy th400 behind my 500 was run for a little while then parked then re-started it started making a knocking noise like there's a bolt tumbling inside the torque converter. anyone have any experience as to what usually happens when a torque converter goes?

 

[dremu]

Check the bolts holding it to the flexplate or flywheel or whatever you call the thing that the starter turns.

From my Slosh.com "slog":

06 Jan 2006 This week on This Old Truck
If the your truck is making a hellacious rattling like the starter is about to fall off, or perhaps the crankshaft has become entropic, energetically speaking ... Check the torque converter bolts. When they get loose, bad noises come out.
Which is better than the Magic Smoke coming out ... auto transmissions do not generally allow the smoke back in.

-- A

 

[Slapperbar]

It's the Menehune trying to get out.

 

[k20]

Hate to say it, but mine did that once.... http://image24.webshots.com/25/0/54/24/281805424OyJZlc_ph.jpg thats the result....Yeh, the fluid looked like metallic red paint, it was real purdy, but expensive looking lol. Check the bolts and pray they are loose. Could also be a cracked flexplate.

 

[Slapperbar]

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[k20]

Yeh I forgot cant link straight to pics http://community.webshots.com/photo/52271780/1281805424034714815OyJZlc

 

[hack500]

'tis a cracked flexplate. after taking it for a drive the noise it got worse and upon some disassembly the cracks are clearly visible now. hopefully after some sleep, I'll be changing that.

 

[hack500]