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post #1 of 17 Old 11-21-2012, 03:42 PM Thread Starter
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Thermastat Again?

I just replaced my thermastat a month ago when I was flushed my coolant. Today got in my truck and couldn't get over 178 ect, my eot was around 195 this doesn't mean my oil cooler failed right?
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post #2 of 17 Old 11-21-2012, 04:17 PM
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No it doesn't mean your oil cooler failed, oil in your coolant would be oil cooler failure. Check your two sensors after letting it sit overnight, they should be within a degree or so. That is called a cold soak. Maybe your temp sensor is bad. Did you install a motorcraft thermostat?

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post #3 of 17 Old 11-21-2012, 04:38 PM
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post #4 of 17 Old 11-21-2012, 04:57 PM Thread Starter
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Ya its a motorcraft, I'll check the sensor In the morning like you suggested. I'll make sure to check the coolant to.
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post #5 of 17 Old 11-21-2012, 05:48 PM Thread Starter
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I checked under the hood and there is some coolant that's leaked out of the degas. Does that mean anything, the motor has been studded. Maybe the cap?
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post #6 of 17 Old 11-21-2012, 05:56 PM
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Quote:
Originally Posted by sampson2269 View Post
I checked under the hood and there is some coolant that's leaked out of the degas. Does that mean anything, the motor has been studded. Maybe the cap?
Make sure your coolant level is at or below the min level. The updated coolant cap is all black with orange pictures on it. Was thee pressure on the system when you loosened the cap?

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Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

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post #7 of 17 Old 11-21-2012, 06:21 PM
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Could be just overfilled..(the new max is the min on the bottle)

Cap

Egr cooler

Head gaskets.


That is the order in which I would look at it.

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post #8 of 17 Old 11-21-2012, 06:24 PM Thread Starter
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I have a bulletproof egr cooler and arp head studs so it shouldn't be either one of those right?
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post #9 of 17 Old 11-21-2012, 06:52 PM
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Quote:
Originally Posted by sampson2269 View Post
I have a bulletproof egr cooler and arp head studs so it shouldn't be either one of those right?
Black onyx gaskets, heads surfaced, pressure tested?

Sent from my phone that somebody didn't help me get.

Unfortunately had to Sell my ......2004 KR CC SWB FX4 - Edge insight cts, blue spring upgrade, updated HFCM drain plug, XDP coolant filter, CAT EC-1 rated coolant, Custom Diesel EGR delete, CAT delete, Rotella T6

SEE MY OIL COOLER REPLACEMENT AND EGR DELETE -
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post #10 of 17 Old 11-21-2012, 07:10 PM Thread Starter
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Yep all of the above, also have ipr coolant filter, I opened the cap and looked in with a flashlight the coolant is brand new elc and it seems to be a darkish brown now, but doesn't seem like oil. How obvious is the oil in the degas if oil cooler fails?
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