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Okay, as you guys know I just replaced my oil cooler and did an EGR delete but today on my way home I saw ECT 190 EOT 210 so I'm getting a 20* delta now.
Since my egr is deleted do I not worry?
The day before I did the oil cooler I did a complete coolant flush and back flushed the oil cooler, the day after I did the oil cooler I installed a coolant filter.
Do I tear it all back apart and do the oil cooler again? Any input would be appreciated.
Damn! There must have still been materials in the block assuming they did a good job.
Sensors OK?
While you don't have an Egr cooler to worry about, it's not doing its primary job of cooling oil. The salvage operation is to drain, remove water pump, and back flush through the oil cooler output port to try to blow out any debris that clogged the new cooler. If that doesn't work, it's another cooler.
That's a good clue, the 5 degree differential. Hopefully it's just a sensor issue. Coming from a world of more specialized sensors then these, you can both a zero shift and a gain (high value) shift. I would check to see if both the oil and coolant sensors on your year truck are the same part number. If so you could flip them in positions, or just replace the oil sensor as that's the one elevated from normal. I'd first check that the connections are good after the rework.
I found these at my local parts warehouse both show the same part # for EOT and ECT sensors
Only difference I see is the OEM ones have o rings and these have teflon tape, for $13 I might try that first if not I'll be ordered another oil cooler.
I know from direct information that Ford keeps a tighter control of its sensors manufacturing spec, including the Motorcraft aftermarket. Considering the task your trying to avoid, I think I'd be going with the Motorcraft just to be sure.
They also have OE parts as well but they are about $30 a sensor. From what I have been vigorously reading the proper way to test the deltas is 65MPH on a flat road for 20 minutes or so?
I should probably note living in CT and living in the north end of CT it's very hilly and I usually cruise around 85 mph and I noticed the temps going up a steep grade, I know I'm trying to make the numbers seem logical in my mind but I really don't want to do another oil cooler again...lol
It's possible your 5.5* spread is more than that as temps rise....i.e the sensor is more out of whack at higher temps, however going 85 and hilly is not the best way to judge things....you really should do the Ford test.
60mph flat road, 15 minutes will do if the truck had been driving 30 minutes.
The problem is the specfic heat differences between coolant and oil, and as you add heat into the oil due to higher engine workloads it can't get absorbed by the coolant fast enough, so the oil to coolant temp differential will rise.
Mike, the only "Ford" test is the acceleration one.
60mph flat road, 15 minutes will do if the truck had been driving 30 minutes.
The problem is the specfic heat differences between coolant and oil, and as you add heat into the oil due to higher engine workloads it can't get absorbed by the coolant fast enough, so the oil to coolant temp differential will rise.
Mike, the only "Ford" test is the acceleration one.
Hmmm, thought I saw a flow chart somewhere for Ford techs for the flat surface driving.......what is the acceleration one you refer to Jack?
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