I have a 1998 Bonneville SE which has the 3.8L V6 engine. With the car at idle or any gear the tach nettle starts to go up and down slowly then it moves faster from near stall to 2000 RPM. After doing this for about 25 seconds it stalls. I think it is the EGR valve staying open. It runs fine with more gas but I can smell fumes. The car has 133,546 miles on it.
Thursday, May 12th, 2011 AT 6:41 PM