Hello, I recently have been seeing my temps (ECT and EOT) rise quickly as I am pulling my 15k lb trailer up gradual grades. My temp gauge will climb quickly while going up the grade to the point where I have to pull over and let it cool down. I have not heard my jet engine fan kick on during these near over heating episodes. During this time I have been noticing a difference in ECT/EOT as much as 46-50* (208-10 ECT and possibly higher as I was concentrating on not fully overheating and 245-254 EOT). During these trips the coolant will puke out the degas bottle. No codes are being thrown.
I took the truck into a shop and they said that my radiator was seriously plugged up. I took her home and pulled the radiator and cleaned it out. There was a TON of crap in there. I put everything back together and now I am noticing that the coolant temps are staying really low (195-208*ish). I hooked up the trailer and went for a run on the same hill to test it out. No temp gauge change, no coolant puking, and the truck was driving just fine. The only issue is the high oil temps of 254* and the ECT was steady maybe around 218* ish. Fan still never kicked on.
Do I have a bad oil cooler? Bad fan clutch? Is there a way for a good mechanic to test the fan and see if it is bad?
Is the oil cooler something that a "handyman" could tackle or should it be left up to someone who knows what they are doing?
I am just wondering if I am missing something here. Thanks in advance!
Oh, I have put over $10k into the engine alone in the last 2 years....
all new injectors
(1) new injector after a new one went bad ($2k emergency fix while 800 miles from home)
Heads redone under warranty at 48k miles (currently 175k on the odo)
(2) new FICMs
2004 F350 Crew Cab 6.0
Toyo Open Country 35's with 18" rims
Xcal3 tuned by Innovative running Xtreme daily
Boost, Trans, EGT pillar guages
4" turbo back straight pipe