I have a situation my max has been running odd. every time i start up the car the motor starts vibrating. Today when i went to go pick someone up the car was had trouble starting. Once the car is warmed up the vibration stops. One other thing when i accelerate hard the check engine light comes on and the car starts vibrating i really need to know whats going on.

 

Check the ecu codes...It has most likely stored a code since the cel came on..

 

Sounds like the exact problem I had when one of my injectors started to go bad

 

try running a power balance test on each injector. also try considering the maf sensor also as a prime suspect. depending on what your thread described
its all i can think of. O also try crank angle sensor may be dirty.