Reason to consult a mechanic (6)

I believe the answer is:

rattle

(Other definitions for rattle that I've seen before include "cause nervousness" , "American viper" , "making one upset" , "Vibrate noisily" , "Baby's toy; sound of something loose" .)

I've seen this clue in the LA Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.