I have a 1990 Chevy Lunina 4 dr sedan- 3.1v-6- Air-Auto Tran
Recently I had a problem with the idle, and lights dimming, and
flickering, at lower rpms. I had it serviced, they replaced, an idle
control, and the alternator was bad. New alternator was installed .
The car runs great, with great accleration, My problem is the
headlights still flicker, and they seem to flicker when the engine
misses, when idling.
The miss isn't detectable under load, when acclerating the engine
seems to run smooth, and strong Car isn't putting out any error
codes. ECM was replaced about a year ago. Also lights dim slightly
when the brake pedal is depressed.
What would make the lights flicker, a the same time I detect a slight
miss at idle.
Any ideas would be greatly appreciated.