Hey everyone,

I have a 2004 6.0 PSD running a SCT Livewire TS, studded and deleted.

Having some EOT/ECT delta issues.

Initially my temps were approx: EOT 235-240/ECT 176. Sensors tested fine. Replaced bad T-stat and bad water pump (impeller broke), EOT still 235+ but ECT up to normal 192 now. Complete flush and new PPE oil cooler/sinister coolant filtration system. The oil cooler was severely clogged obviously. But, still 235+ EOT after the new one. More flushes followed by a new radiator (previous radiator was slightly cracked) and ANOTHER oil cooler of a different brand, (I assumed the flushing was insufficient or it freed up particles to now clog again, or the PPE was a bad choice) but this time the cooler was not clogged so no change in EOT with either. Tried different EGR delete setup and still no EOT change. Could it be restricted/insufficient flow to the cooler OR is the oil bypassing the cooler completely? Or flowing too fast and not allowing it to cool? My mechanics can not seem to figure this out and neither can I. Any help would be appreciated. Thanks!

 

Could the intercooler be clogged possibly make the eot high ? Idk no mechanic haha .seems like everything you changed would of done the trick. Your not using ford gold coolant I hope .

 

Shouldn't be the intercooler. Also, definitely not using Ford Gold coolant. I'm thinking that the oil cooler bypass valve is compromised and allowing oil to bypass the cooler even now that the cooler is not clogged. Has anyone replaced this and had success?