Checked deltas today, is this to be expected? - Ford Powerstroke Diesel Forum
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Old 07-05-2012, 12:27 PM
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Checked deltas today, is this to be expected?

About 2K miles ago, when I first purchased my truck, I went ahead and blocked off my EGR cooler and replaced my oil cooler with a factory Ford one. The system has been flushed and am running CAT ELC coolant. I put my new Scan Guage II on it today, and drove down the highway to check deltas. The ambiant temperature today is 102*F . Driving at 65mph on level road, my delta was at about 12* difference. I'm wondering if anyone else has seen this much of a delta after a new cooler? Could the sweltering hot day play a role?
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Old 07-05-2012, 12:32 PM
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what were the temps? under any load at all?
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Old 07-05-2012, 12:33 PM
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that spread is a little high if reaching that delta without a load? ,,

they should stabilize to within a few degrees if everything is copacetic ,

did u do a coolant filter ,, what is your Actual ECT/EOT ? you may just be over cooling the coolant due to a tstat issue
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Old 07-05-2012, 04:30 PM
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The truck had no load. The ECT was 195*, the EOT was 207*.
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Old 07-05-2012, 04:31 PM
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The truck has no coolant filter.
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Old 07-05-2012, 05:00 PM
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get a filter IMHO

and keep an eye open ,, your ECT might be a tad low for the ambient

mine tends to run about 200 at that temp
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Old 07-05-2012, 05:01 PM
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Was the flush done after the oil cooler was replaced?

Temps are within reason with the temps, a 12* delta is nothing huge to worry about.
I also agree with the coolant filter install.
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Old 07-06-2012, 05:01 PM
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A flush was done once before I bought the truck, and I did one after installing a new cooler.
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Old 07-06-2012, 09:00 PM
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flush probably clogged the new cooler a little
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Old 07-07-2012, 02:18 AM
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You may want to look at your radiator as well. The same stuff that clogs the oil cooler flows thru the radiator as well.
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