Join Date: Jun 2012
Location: Jacksonville FL
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Thank's for the link Matt - I had started off my troubleshooting by reading that thread, its very comprehensive but tough to work through when you aren't at a garage.
So here was the final outcome. I had the truck flat bedded back to Jacksonville (again) where it started right up when we unloaded it from the wrecker. We shut it right down and when we went to start it again a few minutes later the battery wasn't strong enough to turn it over.
The next day it went on a trickle charger and once it was recharged it cranked right up.
We replaced the ICP sensor (it was slugged), the fuel filters (the one next to the heat shield was BLACK!), and changed the oil. We also replaced the screen in the ICP regulator as well as the o-rings. We weren't ever able to actually replicate the problem.
The truck is running quieter but since we don't know if we actually addressed the root cause I'm still a bit nervous about it happening again. My gut tells me it was the ICP sensor and / or the fuel filter issue. Evidently a clogged fuel filter can cause the system to throw HPOP codes.
If anyone thinks I've overlooked anything please let me know!
2005 Ford Excursion 4x4