1996 Mercury Cougar Q&A

1996 Mercury Cougar Question: PART 2 THE CAR WILL IDLE UP THEN DOWN PUTTS BAD LIKE ITS GONNA TURN OFFSOMETIMES

IT DOES OR IT WILL START IDLING UP MEANING RPM DROP THEN RISE THEN DROP.GO TO PULL OF AFTER 15MINS FEEL LIKE THE CAR ON THE RIGHTSIDE A GRRRRRR SOUND -
Answer 1
need better discripton of problem -