Coach identifying film from 1990s (13)
I believe the answer is:
train-spotting
'1990s' is the definition.
I can't judge whether this defines the answer.
'coach identifying film' is the wordplay.
'coach' becomes 'train' ('train' can be a synonym of 'coach').
'identifying film' becomes 'spotting' (I can't justify this - if you can you should believe this answer much more).
'train'+'spotting'='TRAIN-SPOTTING'
'from' acts as a link.
(Other definitions for train-spotting that I've seen before include "Concern with railways (or trivia?)" , "1996 film based on a novel by Irvine Welsh" , "Film about drug addicts (or railway buffs?)" , "Railway hobby; UK film; five Dn (anag.)" .)