Hi--after driving for a while, my Ford Expedition will shake when I come to a stop. If I put it in neutral, or start accelerating it will stop. Any ideas what this is?? I did have the check engine light come on about 6 months ago, and that was the cam sensor. That since has been replaced. Any help you have would be greatly appreciated!!

 

Do the RPMs drop or do they hold steady around 700 or so?

 

I am pretty sure they drop, but I will double check it tonight.