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  #1  
Old 12-30-2012, 11:24 AM
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I need help! Diagnosis

Hey!

I have a 05 6.0 & looked under the hood today & there is coolant around the reservoir cap.

i have no obvious power loss, no smoke, i had to tow my trailer & it was getting quite hot steemed over once 215 F ECT Changed my thermostat, still the same thing.

any suggestions on where to go???

Thanks!
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Old 12-30-2012, 11:55 AM
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How do you know it hit 215? Do you have a monitor to see your difference between ECT and EOT?
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Old 12-30-2012, 09:38 PM
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Yes I have a Digital screen telling me temperatures. EOT & ECT Also when i get my foot into it it makes a wierd whistling/screaming noise from under the hood.
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Old 12-30-2012, 09:44 PM
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What is your temp difference between ECT and EOT? Is the noise you're hearing kinda like a tea kettle sound?
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Old 12-30-2012, 10:07 PM
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Sounds like flash boiling, which is a early indicator of egr cooler and or oil cooler failure. That would be the most extreme, other than that it could be a partially clogged radiator. At the very least i would do a PROPER radiator flush, and see if that fixes your problem. Also i would get a New radiator cap. The factory ones have a reputation for failing under pressure & heat. Do the flush replace the cap let us know if it fixes anything. Although it is almost inevetible that the oil cooler and egr cooler will fail. Let us know
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Old 12-30-2012, 10:10 PM
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I will try that, & Yes! very much like a tea kettle whistle the temps are about 20 degrees difference usually the oil temps are higher
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Old 12-30-2012, 10:13 PM
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You have a restricted oil cooler and probably bad EGR cooler. Need to quit driving it before it gets worse and you end up with blown head gaskets. Gonna have to do complete coolant flush, replace oil cooler, EGR cooler or do EGR delete and needs a new degas bottle cap.
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Old 12-30-2012, 10:16 PM
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I have a EGR Delete already, So i will replace oil cooler & get a new cap. Should i buy the coolant pressure tester also & check for pressurization problems? because last week i lost all heat, i only get heat if stepping on it or towing.

thx
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Old 12-30-2012, 10:17 PM
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what makes that tea kettel noise?
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  #10  
Old 12-30-2012, 10:18 PM
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The degas bottle cap bleeding pressure.
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