After warming up my aod transmission randomly downshifts from overdrive to
the next lowest gear and almost immediately shifts back. This usually happens
around 1500rpm and on the open road. Im sorry its a E40d transmission.
on my 94 with an E40D I shift out of third and into 4th (OD) at about 45 MPH if i am light on the throttle. when i does shift up to OD 45 MPH is about 1400ish rpms. you maybe running right at the break of the shift point.