autom8r Report post Posted June 21, 2013 Last weekend I replaced my faulty fan assembly. The fan speed control module failed, leaving one of the fans operating at high speed all the time [an annoying tattletale, BTW]. A new module costs as much or more as the entire fan assembly, so I opted to replace the whole thing. The service manual instructs you to disconnect the upper radiator hose. That would've qualified this job as a messy PITA. A message to thirdgenlxi was quickly returned with a set of abbreviated instructions, which made the job much cleaner and easier. And so attached for your use is the 'simplified' fan assembly replacement procedure. The entire job took about 0:30 minutes. Scale of difficulty, 1 to 2, about the same as rotating your tires. A hearty thanks to thirdgenlxi for his advice. Ford Edge RADIATOR FAN REPLACEMENT.pdf 10 Share this post Link to post Share on other sites
Kitulu Report post Posted June 21, 2013 Where does one find the service manual? I cannot find it anywhere! 1 Share this post Link to post Share on other sites
thirdgenlxi Report post Posted June 22, 2013 Awesome..... glad you were able to get it replaced and my method of doing it worked for ya. Pretty easy, huh? Just an FYI though, keep a close eye on the connector to the fan module from the main harness...... I'm not sure about that particular brand, but in general many aftermarket fans are more or less....junk. I went round and round with this with a body shop that kept getting aftermarket fans (finally got an OEM one and it's perfect), and every single one the connector wouldn't 'snap' in place cuz the connector on the fan didn't have barely any of the little nub that snaps into the locking tab on the harness connector, and the connector would just slide right off. This will burn up the fan module in no time. So just keep an eye on it.... might want to give it a good tug and make sure it's on there good and solid 3 Share this post Link to post Share on other sites
autom8r Report post Posted June 22, 2013 Where does one find the service manual? I cannot find it anywhere! Kitulu: I bought a set on ebay. There are three books, volume 1 and 2 and the wiring diagrams. If you are patient, you can get the printed ones pretty inexpensively. http://www.ebay.com/itm/2008-Ford-Edge-Lincoln-MKX-Service-Shop-Manual-SET-W-ELECTRICAL-WIRING-DIAGRAMS-/350790691012?pt=Motors_Manuals_Literature&hash=item51acc128c4&vxp=mtr Good luck. Share this post Link to post Share on other sites
autom8r Report post Posted June 22, 2013 Awesome..... glad you were able to get it replaced and my method of doing it worked for ya. Pretty easy, huh? Just an FYI though, keep a close eye on the connector to the fan module from the main harness...... I'm not sure about that particular brand, but in general many aftermarket fans are more or less....junk. I went round and round with this with a body shop that kept getting aftermarket fans (finally got an OEM one and it's perfect), and every single one the connector wouldn't 'snap' in place cuz the connector on the fan didn't have barely any of the little nub that snaps into the locking tab on the harness connector, and the connector would just slide right off. This will burn up the fan module in no time. So just keep an eye on it.... might want to give it a good tug and make sure it's on there good and solid You're right. i noticed that the connector was a little loose and didn't grip that little tab. I'll keep an eye on it. Share this post Link to post Share on other sites
WWWPerfA_ZN0W Report post Posted June 22, 2013 Isn't that what duct tape's for? 1 Share this post Link to post Share on other sites
SaSp Report post Posted August 9, 2013 I need to replace my fan assembly. How is the Dorman working for you? I'm wondering if I should seek out an OEM part which seems to be about 2x the $. Thanks for the instructions. Hope to do this myself and save a few hundred from what I hear the dealerships charge. Share this post Link to post Share on other sites
autom8r Report post Posted August 9, 2013 SaSp, So far the Dorman is working well. I agree with Jared about the connector and that it doesn't quite latch on, but mine hasn't moved. This project was much easier than I expected it would be. Let us know how it goes. Share this post Link to post Share on other sites
SaSp Report post Posted August 10, 2013 Glad to hear it autom8r. I'll be ordering the Dorman this weekend and I'll post back after the work is done. Thanks! Share this post Link to post Share on other sites
RJN0711 Report post Posted February 12, 2014 Saw this while searching. I've been having problem's with overheating while car is in stop and go traffic. Replaced the thermostat still overheating. I'm assuming if the car is OK while driving on Highway then water pump is OK? The AC also only works while driving so I'm assuming that it's the fans. I tried "jumping" the fans by disconnecting the fans from fcm and had no luck in getting them to turn on. Long story short I've ordered the fan assembly to replace it. Does my logic make sense? Anything else that could be wrong? Share this post Link to post Share on other sites
akirby Report post Posted February 12, 2014 I would go with fan also, but it could also be the temp sensor that turns on the fans. Share this post Link to post Share on other sites
RJN0711 Report post Posted February 13, 2014 How would you know if it's the temp sensor? Share this post Link to post Share on other sites
autom8r Report post Posted February 15, 2014 (edited) RJN0711 The better code readers will let you scan the temperature. A reading from a bad sensor will not make sense, reading absurdly high or low or not read at all. If the sensor was faulty, the ECM would cause the fan to run at high speed to protect the engine. The temperature sensor is connected to the ECM, and the ECM decides whether to turn the fans on or not. The output from the ECM signal may be on/off or PWM, depending on the fan module. The temperature sensor is not a thermostat, but a thermistor or RTD, a device that varies in resistance based upon temperature. Some are non-linear. There are two different style fan assemblies. One is specific for Edges equipped with tow packages. The two are not interchangeable so make sure you order the right one. The fan motor windings can be tested by disconnecting the motor leads from the fan module on the housing and checking their resistance. If the motor windings are open or shorted, the motor is fried. In your case, I think one or both of the fan motors is fried. If after you install the fan assembly and immediately the new fans spool up 100% with a cold engine, I would check the temperature sensor next. It could be that a bad temperature sensor caused the ECM to spool up the fans and that the fan motors fried after being on all the time. Of course I yield the floor to thirdgenlxi if he wants to chime in! Edited February 15, 2014 by autom8r 1 Share this post Link to post Share on other sites
Rdom10 Report post Posted April 13, 2014 I am having the same problem with the 1 fan (drivers side) going full out all the time, but this is a brand new fan I ordered and installed per the instructions I got here. The factory fan stopped coming on and car was overheating when at a standstill. So does this mean the new fan I just bought (TYC) is bad?? I was told this was a good brand. Please any help would be appreciated. I am not very familiar with working on cars, but I am an electrician and pretty mechanically inclined. Again thanks for any help Share this post Link to post Share on other sites
autom8r Report post Posted April 14, 2014 There are two different style fan assemblies. One is specific for Edges equipped with tow packages. The two are not interchangeable so make sure you order the right one. The fan motor windings can be tested by disconnecting the motor leads from the fan module on the housing and checking their resistance. If the motor windings are open or shorted, the motor is fried. In your case, I think one or both of the fan motors is fried. If after you install the fan assembly and immediately the new fans spool up 100% with a cold engine, I would check the temperature sensor next. It could be that a bad temperature sensor caused the ECM to spool up the fans and that the fan motors fried after being on all the time. Rdom10: I'm not familiar with the TYC brand, but it sounds like the temperature sensor may be at fault. I would have the codes read using an OBD reader and see what the engine temperature is. If the value is out of line with what you expect or feel putting your hand around the radiator hose the sensor will require replacement. The temperature sensor is on the intake manifold, so while you have the upper intake manifold off, replace the spark plugs too. Good luck! Share this post Link to post Share on other sites
Rdom10 Report post Posted April 15, 2014 Thanks autom8r! I will try that cause planned on changing plugs anyway. A lot of info is pointing to it being the problem. Just to be sure , your referring to the CHT Cylinder Head Temperature Sensor right? Share this post Link to post Share on other sites
autom8r Report post Posted April 17, 2014 Yes. The CHT is located beneath the lower intake manifold. Bring the engine to temperature and use a better OBD reader to read the temperature through the PCM first. Use a non-contact IR thermometer to measure the temperature of the lower radiator hose. Compare that to the reading you're getting from the CHT through the PCM and OBD reader. The readings should be within a few degrees of each other. Look out for the fan blades! Good luck! Share this post Link to post Share on other sites
Rdom10 Report post Posted April 17, 2014 Not looking like CHT, finally broke down and took to a mechanic. He thinks its the fan module. I have a new fan ordered from amazon but probably won't get it in before I leave. Will have to finish when I get back, but will be back on to hopefully say every things good and how I fixed, Thanks again! 1 Share this post Link to post Share on other sites
Renee Williams Report post Posted May 15, 2014 your "easy" instructions for changing out the fans comes up as jibberish when I open it on my computer.. is there a different format that I could view? Or can you just post the instructions here? Any help would be appreciated.. thanks! Share this post Link to post Share on other sites
WWWPerfA_ZN0W Report post Posted May 15, 2014 Are you running the latest version of Adobe Reader? Usually it is a fonts issue or a software version issue causing problems. Share this post Link to post Share on other sites
akirby Report post Posted May 15, 2014 About to try this on Saturday. Got the new fan from amazon. Share this post Link to post Share on other sites
WWWPerfA_ZN0W Report post Posted May 16, 2014 Best o' luck, akirby. What happened with yours? Share this post Link to post Share on other sites
akirby Report post Posted May 16, 2014 (edited) We left the car idling at Lowes then went to a Wendy's drive-thru and it overheated. Did some troubleshooting and figured out the second fan wasn't coming on. It only overheats when the A/C was on. Edited May 16, 2014 by akirby Share this post Link to post Share on other sites
WWWPerfA_ZN0W Report post Posted May 16, 2014 I wonder how much use these fans see. We hardly ever saw fans go out on the Gen I-III SHOs, more likely corroded connectors or blown controllers with them after decades of use. 1 Share this post Link to post Share on other sites
akirby Report post Posted May 16, 2014 I'll see if I can troubleshoot the failed one after I get it out of the vehicle. 1 Share this post Link to post Share on other sites
