Mechanics

WHY THE ENGINE VIBRATES WHEN IDLING AND IMPROVES WHEN DRIVING

2002 BMW 318i • 81,000 miles

When you start the car, engine vibrates slightly shaking the whole car body continueously especialy when the car is stationery but better when moving. There is also a yellow triangular attention sign circled with an anticlockwise arrow that stay on
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Nelson7
May 16, 2012.



Sounds like you might have a misfire. The first thing you need to do is have the codes read. This will help you figure this one out. After you get them read you can return here and post them and we can help more.

Promechanic
May 16, 2012.