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Overheating Issue, 2007 SEL 2.0L FWD


Ownerof2007

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Any help would be much appreciated!!  I have an overheating issue I can't figure out on 2007 Edge FWD with ~190K mi.  The vehicle will run with no issues (temperature neutral) then decide to overheat after an unpredicted period of time.  I can sometimes get the engine to cool back down and stay at neutral after running the heater and/or AC.  But other times after trying this, it just runs too hot and I have to pull over. 

 

I've replaced the thermostat twice and flushed coolant 3 times but issue is not fixed.  No engine lights are on with the vehicle running.  Any ideas?  The heater has not worked for last couple of years so I am wondering if it could be the heater core, but also questioning the temp sensor.  I believe both of those are time-consuming replacements.   

 

I love this vehicle and have owned it about a decade.  Been a reliable family vehicle with looks & design that was ahead of it time in 2007.

 

Thanks in advance for taking the time to read this and give input.

Edited by Ownerof2007
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Welcome to the Forum, Ownerof2007 !

 

Given your long history of ownership, this may be an unnecessary question, but since you didn't mention it among your remedial actions...

 

Have you verified the engine cooling fans are operating consistently?

 

The following Workshop Manual sections may be helpful, especially since you've already replaced several of the items mentioned in the Diagnosis and Testing procedure...

 

Document download links>

Engine Cooling - Diagnosis and Testing - 2007 Edge Workshop Manual.pdfFetching info...

Cooling Fan Motor and Shroud - Removal and Installation - 2007 Edge Workshop Manual.pdfFetching info...

Cooling Fan Motor and Shroud - Enhanced Image 1 - 2007 Edge Workshop Manual.pdfFetching info...

Cooling Fan Motor and Shroud - Enhanced Image 2 - 2007 Edge Workshop Manual.pdfFetching info...

Cylinder Head Temperature (CHT) Sensor - Removal and Installation - 2007 Edge Workshop Manual.pdfFetching info...

Cylinder Head Temperature (CHT) Sensor - Enhanced Image - 2007 Edge Workshop Manual.pdfFetching info...

Cylinder Head Temperature (CHT) Sensor - Connector C107 Details and Photo - 2007 Edge.pdfFetching info...

Cylinder Head Temperature (CHT) Sensor - Connector C107 Location - 2007 Edge.pdfFetching info...

Lower Intake Manifold - In-Vehicle Removal and Installation - 2007 Edge Workshop Manual.pdfFetching info...

Lower Intake Manifold - Enhanced Illustration - 2007 Edge Workshop Manual.pdfFetching info...

 

Good luck!

 

Edited by Haz
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Thank you much for the response and download links.  I had not seen these files before and will read through them.  The cooling fans seem to be operating consistently.  Also, there is no sign of coolant leaks from the system inside or outside the vehicle -- That said, pressure will build up high with bubbling in the reservoir when overheating. 

 

In terms of a potential temperature sensor issue, it seems like the check engine light would come on with bad temperature sensor, but maybe I am wrong on that.

 

Thank you again.

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A possible cause is the RadiatorFans ControlModule, mounted on UpperLeft corner of FanCowling;

it's a NotoriousFailureItem, commonly stops responding to Computers FanSpeed signal

resulting in engine overheating when idling or in Stop+GoTraffic.

Replace with new MotorCraft OEM part only; aftermarket offbrand replacements are often not fully compatible or fail quickly.

Edited by DILLARD000
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  • 1004ron changed the title to Overheating Issue, 2007 SEL 2.0L FWD

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