02-16-2014, 02:59 PM
Compression Ignition Addict
Join Date: Jul 2011
Location: Wayne County, Ohio
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Need help using AutoEginuity to track down rough running Excursion v10. Misfire quest
2000 Ford Excursion v10. 156k on it. Don't have an idea on the previous maintenance history.
Bought it about 2 weeks ago and it ran flawless on a 2 hour drive home.
Recently I have been noticing a rough idle. Tach bounces slightly and I can feel it vibrate the Ex.
It also started running very rough while driving the last couple days. Feel like it is misfiring severly and vibrates the entire vehicle while driving. I can hear it running rough also, seems like there is more chatter from the engine.
What is weird though is that it does not always do it. Yesterday it ran perfect, smooth and quiet. Driving it today to church also had no issues until coming back home. Started it up and it was idling rough, driving home it ran worse than ever. I even thought I could smell a slight burning smell coming from the vehicle (most likely from the rough idle causing it to not burn as clean).
Long story short. I have the 2013 version of Auto Enginuity. Should be updated with a pretty currrent version. I have the enhanced Ford bundle also (thanks to dealing with 6.0s).
I cannot seem to find a cylinder contribution test though. I thought I would be able to use AE to track down a cylinder(s) that is not preforming correctly.
Any ideas on how to run that test or any test that will help me track down the issue. Would like not not start throwing parts at the truck.