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engine overheating ford edge

 
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rnorman rnorman
New User | Posts: 3 | Joined: 08/11
Posted: 08/24/11
07:37 PM

my engine is overheating on  my 2009 ford edge, it appears that the cooling fan is not working any ideas  

waynep7122 waynep7122
Addict | Posts: 4561 | Joined: 08/09
Posted: 08/24/11
07:59 PM

get out the owners manual...  find the fuse section.. check the fuses and maxi fuses..  look for rodent damage..


check codes...     look at live data with a OBD2 scan tool...

look at the coolant temp sensor reading.. is it accurate???
you might have to verify with an infrared thermometer ....


does the cooling system hold water??

does the cooling system hold pressure??

the fan is usually controlled through a relay or the constant current relay module (ccrm) by the PCM... i don't have a manual on the 2009 models..   so i don't know if they have changed it..   on the 2007 models.. there are 2 different fan controllers... one for edges with the factory towing package.. that system requires 2 fuses to operate the radiator cooling fans..

without the towing package. its only one fuse for both fans...

please test both ends of every fuse..  with the key on .. the test light should light up on both ends...

that is the first place to look at..


i will look around .. for more info

new cars almost always need at least a scan tool to examine the data to know what the PCM (engine computer is doing)  

rnorman rnorman
New User | Posts: 3 | Joined: 08/11
Posted: 08/24/11
08:10 PM

i have checked the fuse and had the same thought about rodent damage, as we live in the country, but the fuse is good and i saw not visible damage

i wil have to take to shop to have data checked i do not have a scan tool

yes system holds water and pressure

i appreciate your response  

waynep7122 waynep7122
Addict | Posts: 4561 | Joined: 08/09
Posted: 08/24/11
08:20 PM

additional thoughts..

do the fans come on when you turn the A/C to max cold...

that will sometimes activate the cooling fans on to cool the condenser ...  

rnorman rnorman
New User | Posts: 3 | Joined: 08/11
Posted: 08/24/11
08:23 PM

the fan on the passenger side is working its the fan on the driver side that is not comoing on at all  

waynep7122 waynep7122
Addict | Posts: 4561 | Joined: 08/09
Posted: 08/24/11
09:19 PM

well its not the fuse..   do you have the factory installed trailer hitch??????

time for a scan tool diagnosis...

i was having fun the other day on a friends OBD2 car.. i was manually controlling the cooling fans on and off manually with the scan tool for testing ..

this takes more than a generic scan tool usually..

you can access the full service manual online at alldatadiy.com   or eautorepair.net     both have the info for a subscription fee.. you can get subscription kits for the alldatadiy.com site at autozone stores... they own alldata..    snap on owns mitchell and they have the eautorepair.net and the ondemand system ..

since most of the stuff i work on personally is older than 2000.. i don't keep up with all the manuals...  when i see them i buy them..

somewhere in the owners manual.. page 248?????
fuse # 5 40A** Cooling fan (vehicles with trailer tow)

60A** Cooling fan (vehicles without trailer tow)

fuse #6 40A** Cooling fan (trailer tow only)  

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