I had a blown oil cooler. its fixed and all sealed up. was in the process of cleaning all the crap out the cooling system and i was on about flush #6. truck stutters a little dies a once or twice.

i decide finally maybe its the electric b/c i'm monitoring ipc and the ipr and it sounds strong when i drive it. i pull up all the battery readings. battery is down to 8v. and, its hopping around back to 12v, but i'm guessing i found the issue.

i'm trying to troubleshoot by restarting when it dies on me. the battery numbers are still bouncing around. its giving me issues w restart. its like hesitating. not low voltage, but as it turns out, i guess it was triggering the pats system.

now the truck stuck in middle of my lot and after the last time it died, it won't come out of the theft deterrent mode ive tried the 45 second thing tried in unhooking batteries etc

i have codes P0155 and P115a which are cluster comm and low fuel indications - just filled up truck and the cluster lights up fuel shows full, oil pressure indicator is in the center (which i would think odd) looked at the oil temp and pressure sensor pigtails seem fine.

alternator dead? did it kill these two new batteries? any ideas? spent a lot of time getting this truck back online w the oil cooler really a pisser

 

I would have alternator checked and batteries and maybe the ficm

 

I exchanged pcm’s w another truck and it starts. Still missing right side of cluster. Rpm, trans temp and oil pressure all dead w ‘check gauge’ light on. No connection to instrument cluster and low fuel indication even though it is full. Guessing I either fried the cluster or something is interfering w it’s operation.

 

The clusters are know to go bad have you removed and checked with volt meter ? I would get cluster fixed then see where you are or if you have a tuner that you can check all your gauges.

 

I have AE and rpm reads. Trans temp doesn’t have a feedback for degrees but the trans temp failure bit reads 0 which means it hasn’t failed I guess. Low
pressure oil doesn’t register either. Oil temp reads, but it is reading a little irregular.

yesterday on a test drive oil temp was 15 degrees above coolant temp and this am at start oil temp was 12 or 13 degrees below coolant. This am you’d think the temps would be about equal. Seems like maybe that sensor could be failing.

 

I see you never change the egr cooler or did you? But definitely electrical that’s always hard to diagnose! But the temp difference shouldn’t be more then 10-12 degrees I just changed my egr cooler and oil cooler now they never go more 5-7

 

EGR cooler deleted. its electrical - just swapped in a cluster from an 04 still no comm to cluster. this cluster has battery and coolant temp. so, i'm getting speed, low oil pressure, diesel level, and battery level. no rpm, no trans temp, no oil temp, no coolant temp reported to cluster, but those that are available for choice in AE diagnostic, like coolant temp, show up. what am i missing?

there's a common bus + and - from pcm to cluster - is it direct or is there a connector inline? ANYBODY KNOW? guessing it has water in it.

 

need the ford factory wiring diagram for a 2005 super duty from cluster to pcm there are alot of plugs on the driver side wheel well. i'm guessing i have an issue in there someplace something got wet, perhaps is still wet. i checked all the wiring plugs on that side that are cupped up. most the plugs over there are female side down - keeps water out you think 3-4 are cupped up. there were all dry w a little dilectic grease still visible.