Bad Oil Cooler?

powerstrokedkid87 · Aug 16, 2012

we did a reman swap on a 03 excursion, temps were all in check for 1000+ miles, did an oil change...400 miles or so later, oil tems are showing 235-240 with spike to 255. coolant around 192. with the new motor we did studs, oil cooler, egr delete, ect. could the oil cooler really be bad again already?

Bigdeere · Aug 16, 2012

Yea somethins not right, shouldnt be any more then 10 deg difference i think.

powerstrokedkid87 · Aug 16, 2012

i know what it should be, im questioning if the oil cooler has crapped out already, or if it could be something else, i was thinking a sensor, but idk if that would explain the loss of power

yeehaw · Aug 16, 2012

if the truck has the reflash in it it could go into limp mode, but usually it will throw the light wrench in i thought

Snake · Aug 16, 2012

Sounds like the oil cooler is clogged. The 6.0 goes into limp mode when the oil temp hits 253* (I think that's the magic number).

My current delta is about the same: ECT 202 / EOT 235.

FWIW, I'm in the process of replacing my oil cooler again. First one was okay for 120k miles, second one clogged some time in the last 40k. Maybe in the last 20k. I was tired of messing with it and worrying about it and bought the Bulletproof oil cooler. Only way to go IMO.

Are you checking the split after 10-15 min of driving on flat road at 60-65 mph?

Irontx · Aug 16, 2012

Preaching to the choir!!! Lol.... Yeah... 253 is the number. Those sound like my numbers. Get to spend Saturday dropping in an oil cooler and flushing the shyt out of it.....

powerstrokedkid87 · Aug 17, 2012

if it goes into limp mode, does changing the oil cooler automatically fix the issue, or does something with the computer need to be done?

Irontx · Aug 17, 2012

Truck defuels to try and bring the temps down....once you are under the temp..... Turn it off and restart....and its good to go. Little wrench light will be gone.