My KIA Sportage 2001 will not accelerate and shakes violently until it shuts off. on 2001 Kia Sportage

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As requested by a mechanic, I replaced the cham shaft sensor, had a tune up, replaced power steering hose, and had oil change. The car still does not go over 40mph and shakes violently when I come to a stop. It shakes so bad that it shuts off. Any solutions. Now im told to change the coil packs.
(1) Answer
Get your car diagnosed by a professional. I don't have enough information from your question to know what to think.
A Kia or Mazda technician should be able to help you.
If you want to find a Kia specialist, here's our directory link for you: