My car won't go over 45 mph without shaking really really bad...we had a mechanic look at it and he jacked up the whole front end and told us to press the gas pedal and he said he didn't know because when we accelerate the whole front end shakes

What is your question?

My car won't go over 45 mph without shaking really really bad...we had a mechanic look at it and he jacked up the whole front end and told us to press the gas pedal and he said he didn't know because when we accelerate the whole front end shakes

What makes this problem better or worse?

Staying under 45 mph

How long has your 2002 Dodge Neon had this problem?

Almost a month