2002 Mazda Protege Q&A

2002 Mazda Protege Question: my car is having trouble picking up speed

3 days ago i got my car a tune up and oil change.my car has trouble picking up speed, when i'm at a stop light it starts to shake. and my check engine light is flashing. -
Answer 1
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. Roy -
Answer 2
so with that require a diagnosis test or they can just look at it and know -