This follows a very very long route (so slow) train from Chennai to Guruvayur. Chennai-Madurai Koodal exp and Madurai-Guruvayur exp were combined to get this train. I think now these two can once again be separated as follows:
(1) Chennai - Kanyakumari Koodal exp (dep 07:00 reaching Kanyakumari 19:00)
(2) Madurai - Guruvayur exp as of old.
(3) And more important Chennai-Guruvayur exp via Katpadi, Salem, Coimbatore, Palakkad can be introduced - will be a super hit.