Close
Q:

At idle speed, there is engine vibration. Also intermittent clicking sound. on 1997 Volvo 850

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
1) when engine is idling, there is an abnormal loud humming noise and engine vibration. 2) When you brake and car stops, engine shudders slightly. 3) Also when engine idles, there is a clicking sound as if some kind of relay is coming on and off. It is a continuous sound.
(1) Answer
have alternator tested. engine may be trying to shut down when extra load put on electrical(alternator), thats why the shudder and vibration. is a possibility hope it helps.