Re: E40D woes
Well, I think I can help you out on the hole. I wonder if you are describing the hole at the bottom edge of the trans bellhousing. It would usually have a rubber access plug in it, and is about, say, 1 1/2 inches in diameter. It is the access to the drain plug on the torque converter ( the big fluid-filled donut that multiplies torque, allowing among other things, auto vehicles to tow more than stick shift vehicles). It also is the connection that slips when you are stopped and the engine is running (a fluid centrifugal clutch). Some fluid there may say you have a slow converter leak, or a slow front trans seal leak.
Maybe others can comment on leak possibilities, and the shift quality. But sometimes, trans'es just do clunk into gear sometimes.
Whadd'ya all think?