Hello, i have a 99 mirage de and i need help! ever since i help jump start my friend's car, my car stalls at stops. does anyone know whats up? i've also installed some power door lock acuators. but i have no power connected to it yet.

anyone know what could be up?

do you guys think its the fuel pump or the battery?

 

any check engine lights? does it run ok at speed?

 

the check engine light has been on for a long time. the mechanic said it wasnt a problem. wtf?? so its been on.