my car is having trouble picking up speed on 2002 Mazda Protege

3 days ago i got my car a tune up and oil car has trouble picking up speed, when i'm at a stop light it starts to shake. and my check engine light is flashing.

Asked by for the 2002 Mazda Protege
2 answers
take it back to the shop that did the tune up and have them re check. it sounds like you have a bad coil or wire that they may have missed.

so with that require a diagnosis test or they can just look at it and know