engine hesitation on a 95 protege
 

when the engine is cold and i come to a stop and hit the brake, the engine hesitates and whole car shakes/rattles..it seems like the engine is gonna die but it doesnt, but after 10 mins of driving and engine is warmed up when i come to a stop, theres still a little bit of shake/rattling/vibration but not as bad when after a cold start...inputs and suggestions will be greatly appreciated! thanks!