My car is an '87 Euro 300D.
While coasting with foot off the accelerator pedal, my transmission sometimes downshifts but sometimes doesn't, when I move the shift lever to a lower gear.
But if I step on the accelerator pedal a bit, the tranny downshifts to the selected lower gear.
Is this normal? If it's not, how can I make downshifting while coasting more consistent?
In all other driving conditions, like when accelerating, my tranny upshifts and downshifts normally.