Hey by anychance does anyone know wha this might be? when i have my mustang on drive and i stop at a complete stop... it sundenly like wants to take off like if i was to punch the gas but i have the brake all the way in then like it wants to take off by itself..????? that happend long time ago and like 2 days ago it kept on ddoin it till yesterday it stopped? what might be the reason?

 

Most weird driving/idle problems can be traced back to the Idle Air Control(IAC) valve.You can remove this and clean it on the bench,or use carb cleaner sprayed into the 3/4 inch hose going into the front of the throttle body.The part can be replaced for about $40 from Ford.???

 

Clean that IAC. You might want to change your PCV valve to a Ford factory PCV as well, just to make sure you are not letting in any more extra exhaust into the system causing the IAC to go screwy.

Are you 5 Speed or Automatic?