My dad's 2000 Buick LeSabre misfires at idle, never at
any other time. It's of course, intermittant, it'll mis-fire maybe
50% of the time when you stop at a light or stop sign. It's
quite noticable, you can feel it through the throttle pedal.
I don't want to hear, "They all do that" - does
anyone know the cause of the mis-fire?