Perform repair to your cart (5,3)
I believe the answer is:
carry out
'perform' is the definition.
(thesaurus)
'repair to your cart' is the wordplay.
'repair' indicates anagramming the letters (letters are fixed or repaired).
'your'+'cart'='yourcart'
'yourcart' is an anagram of 'CARRY-OUT'.
(Other definitions for carry out that I've seen before include "Realise" , "Takeaway (Sc. & US)" , "one can't stay for this meal" , "Remove - execute" , "Put into practice, accomplish" .)