As expected, cute model left after working (2,3)
I believe the answer is:
on cue
'as expected' is the definition.
(I've seen this before)
'cute model left after working' is the wordplay.
'model' becomes 'T' (Ford Model T car).
'left' indicates named letters should be taken away (some letters have left).
'after' means one lot of letters go next to another.
'working' becomes 'on' (e.g. a machine is working or on).
'cute' with 't' removed is 'cue'.
'cue' put after 'on' is 'ON CUE'.
(Other definitions for on cue that I've seen before include "At exactly the right moment" , "at the appropriate time" , "Where chalk may be put" , "As a snooker player might be" , "When expected" .)