读者Helena问：Dear Mr. Lee,
You are great in helping my husband Dennis to solve the car problem last year and hope you can help me with my car this time.
I have a quick question – when start on the engine, I can hear some sound in the car which normally do not have; then when I drive, the steering wheel is shaking. Do you know what is the problem with my car? It is 2004 Dodge Grand Caravan.