'05 6.0 Overheating Help
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Senior User
Joined: Mar 2011
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From: New Mexico
'05 6.0 Overheating Help
While returning home from Albuquerque yesterday, the truck started to overheat. The wife was driving, maybe a little too close to the semi in front of us, doing 65-70 mph. We come into Fort Sumner where the speed limit is 45 and we are no longer behind the semi and we get a message on the instrument cluster to "Check Engine Temperature" and sure enough it is pegged high. We pull over and put the truck in Park and the temp starts to drop back to normal so we press on as we are only an hour from home. Temp stays normal until we pull into the driveway and the temp pegs high again this time giving us a "Engine Temp High" message.
Any ideas what may be happening?
Any ideas what may be happening?
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Senior User
Joined: Mar 2011
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From: New Mexico
No smoke. Not sure of coolant loss, will have to check when I get home this afternoon. Shut it off when we got home and never did go back out to investigate later in the evening. 76K on the mileage and don't know of any mods, just bought it in March with 69K. No way to check codes.
Posting Guru
Joined: Jan 2007
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From: Gilbert Az.
Did you look under hood to make sure you aren't low on coolant as that usually starts just before the EGR cooler fails, you may just have a leak, and or possibly oil cooler is plugging up not allowing enough cooling at low speed, either way get it checked out quickly 6.0's are notorious for cooling system related failures.
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From: New Mexico
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Postmaster
Joined: Oct 2007
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From: Illinois
That is a slight possibility. It's probably something more serious. Once you've checked coolant post back.
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Senior User
Joined: Mar 2011
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From: New Mexico
Ok, checked the coolant and there is none in the reservoir but no signs of a leak either, ie fluid on the ground or on the engine. So obviously I need coolant but since I can't see any to tell what kind was in it can they be mixed or will I have to have it flushed and refilled?
Lead Driver
Joined: Nov 2007
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If there are no obvious leaks you probably have either head gasket problems, or a blown EGR cooler. Having it checked out ASAP by a qualified tech is in your best interest. You can top off the coolant reservoir(degas bottle) with some distilled water to get it to the shop for diagnosis/repairs. If you have any difficulty starting it, do not keep trying to start it. A leaking EGR cooler can present a hydrolock situation which can be very damaging.
Postmaster
Joined: Oct 2007
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From: Illinois
No coolant is not good. Use only Ford Gold or Zerex GO5 antifreeze. In the meantime I suggest you try to read codes and see if anything is stored. Try Autozone or another parts place possibly. Also, are you familar with the EGR on the truck? If you can, remove it and see if it's wet. Do not drive the truck unless it's to the shop.
Lead Driver
Joined: Nov 2007
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They can be difficult to remove. Try to rotate it enough to get a pair of small prybars under the mounting flanges and pop it straight up. It should be dry, along with the area in the manifold directly underneath it.
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