6.0L Temp Question
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Junior User
Joined: May 2014
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6.0L Temp Question
Hi all,
I have an '05 6.0L Excursion. It's actually an '04 engine.
I'm in the Canadian Rockies right now, and I'm worries about my EOT, TFT, and ECT numbers. Yesterday, when I left for this trip, I bought a ScanGUAGE II.
What should my numbers be at? How will I know if my engine, transmission, or cooling systems are about to blow?A
EOT seems really high, 245ish while towing my 8k travel trailer around. Flat or mountains, it gets to that temp. If I have a long, long, long mountain climb I've hit as high as 261.
ECT is sitting in the 200-210 range. At 220 the fan kicks into high gear, and gets really loud.
Should I be worried?
I have an '05 6.0L Excursion. It's actually an '04 engine.
I'm in the Canadian Rockies right now, and I'm worries about my EOT, TFT, and ECT numbers. Yesterday, when I left for this trip, I bought a ScanGUAGE II.
What should my numbers be at? How will I know if my engine, transmission, or cooling systems are about to blow?A
EOT seems really high, 245ish while towing my 8k travel trailer around. Flat or mountains, it gets to that temp. If I have a long, long, long mountain climb I've hit as high as 261.
ECT is sitting in the 200-210 range. At 220 the fan kicks into high gear, and gets really loud.
Should I be worried?
Cargo Master
Joined: Jun 2007
Posts: 2,723
Likes: 5
From: Roseburg, OR
I would be worried. Sounds like your oil cooler is plugged. You should test the EOT ECT differential after driving for 15 minutes, unloaded, with relatively level terrain. Your temp spread shouldn't exceed 15°.
Token Redneck
Joined: Jun 2007
Posts: 9,339
Likes: 350
From: Breckenridge, TX
Check your Xgauge data entry in the Scangauge. 261*f for EOT shouldn't be possible, the PCM defuels at 253*f. After a long cold soak of not running the engine, compare the ECT, EOT and TFT, they should all be within 1-2* of each other. If they aren't either your coding is messed up (very easy with how many steps and digits there are), or you're having a sensor bias issue. The ECT and EOT sending units are identical, so you can swap them and see if the bias moves.
If you confirm that the values are accurate, and in line with ambient temps and each other after a cold soak, replace the oil cooler immediately before it or the EGR cooler bursts.
If you confirm that the values are accurate, and in line with ambient temps and each other after a cold soak, replace the oil cooler immediately before it or the EGR cooler bursts.
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Junior User
Joined: May 2014
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I'm guessing it's a bad sensor. The engine didn't cut out at 253, so it must bee reading incorrectly. I'll double check my XGauge input, but I'm usually good with that sort of stuff.
The reason I'm guessing it's the EOT sensor is because it is located under the turbo air intake. 2 weeks ago, while climbing a smaller hill, the clamp holding the flex hose snapped. The hose blew around for a bit, until I got pulled over. I'll bet it hit/dislodged the sensor. That makes sense to me!
I'll take it apart today and have a look-see. Maybe it's been dislodged, which is a simple enough fix. Otherwise I'll replace it, which also looks simple enough. Assuming I can find one in the middle of nowhere.
The reason I'm guessing it's the EOT sensor is because it is located under the turbo air intake. 2 weeks ago, while climbing a smaller hill, the clamp holding the flex hose snapped. The hose blew around for a bit, until I got pulled over. I'll bet it hit/dislodged the sensor. That makes sense to me!
I'll take it apart today and have a look-see. Maybe it's been dislodged, which is a simple enough fix. Otherwise I'll replace it, which also looks simple enough. Assuming I can find one in the middle of nowhere.
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