Not my truck, but on a friends 04, that we did the oil cooler 3 times in his eot will not get anywhere near 180/190 i think the highest we ever saw was 153*

We changed BOTH EOT/ECT sensors

cold soak after sitting over night ECT 51* EOT 12*

where do we go from here?

 

The fact it's had three oil coolers make me wonder if it's related.
How many miles is he getting per cooler? Some owners never even need a new oil cooler, is this a truck with half a million miles on it?\
Are these OEM coolers?

 

Check eot pigtail wiring. After cold soak, temps should only be a few degrees of each other.

 

Long story on this, bought his truck with a severly blown turbo.....we decided not knowing the history we should do the oil cooler and egr delete.....

he was stingy on parts and bought a $30 oil cooler off ebay and it blew with in a couple hundred miles...so ebay sent him another $30 oil cooler which he took out the blown one installed the one again from ebay JUST for flushing purposes.....then removed it and installed a FORD oil cooler......

Temps were an issue since the first oil cooler replacement

 

So where to does the ECT hang out?

Yeah, those flea-bay coolers should be banished. Other poor saps here have had the same luck

 

What are you using to read the temps? I had a similar situation where my cold soak and running deltas where 30-40 degrees. It turned out that it was the scanner I was using and not the truck. Try using a different scanner or method to read the temps.

 

12 Celsius is 53 Fahrenheit. Think your units are not the same.

 

The EOT hangs out right around 150* I thought it was the Scangauge he had but we tried mine and it didnt make a change....

My truck cold soak are about 1 deg off of each other

Any one have the part # for the pigtail for the EOT sensor?

 

Cold soak test failed. It's either the sensor or the wiring. Since the sensors have been replaced that leaves the wiring. You can test this by switching ect & eot, if the eot is still way off, it's the wiring. Pigtail part # is .

 

BB has it called, no way that is the correct reading.

 

And when oil gets to 150, what does the ECT get to?

 

Make sure that the scan tool is reporting the correct reading. Sometimes a bad reading is a configuration issue with the scantool.

 

The ECT would be around 186/190*

Something must of been wrong with the pig tail/wiring we swapped that out and its reading good now.....187-192*

 

Glad you got it "fixed"

Always sucks when you know something is ok but reading like it's not