this is really crazy...my car will randomly decide to have the idle drop..to nearly the point of the car dying but then it shoots right back up and then bounces maybe a hundred or so rpms up and down for like 5 seconds...then begins to idle right...nothing inparticular about this ...just that I have never seen it happen when the car is cold...and it happens most often when the steering wheel is turned all the way when the car is stopped and the power steering is working at full power...however it sometimes happens when the wheel is straight....fuel pump issue maybe? what do you think....also just the other night I noticed my headlights diming and brightening right back up a few times....alternator charge is strong...battery is starting to get old maybe putting a little too much strees on the system?