th350 leak
 

when my truck sits it leaks atf. but not so much when its running and under pressure ? anyways . looks like from the lock up switch for the trrouqeconvertteer lock up. witch us un-hooked. any ideas? the shifter seal is new. and the pan gasket is new

84 th350C

Re: th350 leak
 

could be tailshaft seal, maybe speedo cable/gear area....??

Re: th350 leak
 

i know mine will leak outta the tail shaft if she sits for a while

Re: th350 leak
 

no its more forward then that. drivers side. forward of the speedo

Re: th350 leak
 

found the leak. its the lock up plug up the drivers side. anyone know where i can get a new plug? even know im not hooking itup. just to hold fluid from coming out of the thing

Re: th350 leak
 

I replaced mine 6 or 8 years ago. I bought it locally from a place that most of the transmission shops buy from. I looked on bulkpart.com, but couldn't find it. I have never dealt with them, but have seen others recommend them.

Slonaker

Re: th350 leak
 

vent is on driver side toward the top...reach up there and see if fluid is coming down the side from top.

Re: th350 leak
 

nope not there. its the plug. i drained the fluid and cleaned the area and put rtv all around it. going to add atf tomorrow and see if it leaks