240D shifting anomoly

[Chris Haney]

I have seen this posted before but don't beleive my 83 has all the pieces the 300D's have.

At full throttle shifting is smooth although it seems acceleration stops a few seconds befor the last shift at 60.

At partial throttle shifting can be neck snapping.

I see from other posts vacuum leaks are suspected so I looked at all the hoses. There are some black rubber hoses connected to two switches mounted on the valve cover. They seem rather loose. The output of the switch goes to the transmission.