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Overheating ecoboost when towing

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Overheating ecoboost when towing

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  #76  
Old 07-11-2018, 09:18 AM
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Thanks, sublime. It sounds like your truck was just about to go into limp mode then. And as soon as you topped the grade, the load on the engine went down and the ECM decided it didn't need to do that. Clearly, it was not an actual overheat, because that won't drop off so quickly.

Someone else posted that the ECM is supposed to enrich the mixture under these conditions which will help things. I wonder if there's an ECM flash that your truck might benefit from?

- Jack
 
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  #77  
Old 07-16-2018, 10:20 AM
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Join Date: Aug 2013
Location: Idaho
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I pulled over horseshoe bend hill last week. Unfortunately the full race radiator didn't really help anything. It cools off really quick but it still went into limp mode. It was in the upper 90's so it was hot. I am at a loss of what to do. I have the new radiator, the new intercooler, I have a larger tranny cooler on order as my transmission has started to heat up recently. I love the power of these trucks but they can't handle the heat. I've been thinking of getting a widsheild washer pump and setting up a sprayer nozzle in front of the radiator to see if that will cool it over the steep grades .
 

Last edited by basecamp; 07-16-2018 at 10:44 AM.
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  #78  
Old 07-16-2018, 12:44 PM
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Get some liquid nitrogen and have it spray at the radiator. That'll cool it.
 
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  #79  
Old 07-17-2018, 09:12 AM
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Basecamp, I'll say it again - your truck is NOT overheating. The problem is in the programming of the ECM. It is seeing the high load condition for a prolonged time and is putting the engine into limp mode to force you to reduce that load. Since it's not overheating, bigger radiators, and other cooling methods will not help.

I think you should consult with a dealer you trust and see if there's an ECM flash that would correct this.

- Jack
 
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