If the TC was in some way damaged, how would you know? Would it shudder? Would it just slip at WOT? What would you feel/experience?

 

Good way to tell is to look at the flexplate side of the verter if you can. Thats the side where the clutches are internally. See if there is any paint burnt off or not. If its not a painted converter, see if the metal is blue or discolored in a nice circle pattern. That notes a case where the clutches got dam hot.

 

The most common sign of a converter failure is a consistaint whine.

 

im getting the same signs. a shudder in 2nd from about 1200-1500 and then if i set the cruise at 80mph the rpm will eventually fly up about 2000rpm and the truck will just chill at 80. no problems if i set the cruise at 70.

 

A worn converter apply valve/bore maybe what would cause converter slippage.

 

It's not a TCI converter is it?

 

Well, hell, I must have married a converter...

 

Not in my case. I'm just having all sorts of slippage/chatter/surge problem with my newly rebuilt trans and I'm trying to see if converter damage could be one of the causes.