Engine sounds like a lawn mower


My engine has recently started making a loud buzzing noise, similar to lawnmower. You can hear it after driving around for a few miles, but if you turn it off and back on again the sound is gone.

Anyone know what it could be, and more importantly, how much it would cost to fix?


Is this a lawn mower, airplane, bus, truck, car? Car mileage, recent work, where is the noise coming from, etc. etc.



Sorry, it’s car. 2003 Saturn Ion. About 36,500 miles, had an oil change this past week.


When the car starts making its racket, have you ever stopped, lifted the hood, and inspected? Have you peered underneath to see if the exhaust system is still attached? Tell us your findings.