Английский словарь американских идиом - tune up

{v.} 1a. To adjust (a musical instrument) to make the right sound. * /Before he began to play, Harry tuned up his banjo./ 1b. To adjust a musical instrument or a group of musical instruments to the right sound. * /The orchestra came in and began to tune up for the concert./ 2. To adjust many parts of (car engine) which must work together so that it will run properly. * /He took his car to the garage to have the engine tuned up./