I have a 1994 acura integra ls. When I go and start it in the morning right as i turn the key and the ignition starts the car about 3 seconds after the car starts there is a buzzing sound that occurs for 2-3 seconds. It sounds like its coming from the front side passanger tire or the fuxe box. I am very Confused. some times when i hit hard bumps or potholes it makes the same noise. plz help.

Derek

 

When you start the car, it's just the ABS system checking itself.