Surging and stalling in Park or in Drive on 1990 Pontiac Grand Am

My car is actually a 1987 Pontiac 6000 LE. I was told it could be one of the following: Throttle Positioning Sensor, EGR, or Oxygen Sensor. Which one is most likely to cause this problem?

by in Bayville, NJ on March 12, 2011
1 answer
ANSWER by , March 15, 2011
try map sensor