Originally Posted by billha
What do you mean by 'pulse ahead'? Under some conditions, the ECM will command a higher RPM (maybe 1,000 RPMs or so) while idling, and it will then command the RPMs to drop down to the normal level (roughly 725 RPMs) within a few seconds after that.
By "pulse" I mean that, while in gear, the misfiring seems to push the car ahead slightly rather than just idle peacefully with the brake pushed in. And this is why I have to put my car in neutral at lights so that I dont end up rear ending the person ahead of me.
Could it be something with the electronics where the misfiring causes something in the trans/torque conv to grab on during one of the misfires?