| Author | Message | ||
     Portero72 |
First off, I was aware that the fan had been on its way out-it sounded rattly and generally less than healthy. BUT, on last week's Ozarks trip, it started behaving strangely. It would cycle on and off for no apparent reason(I do not have the CK logic), and even came on less than a mile into a trip to the store, from dead cold, in 45 degree weather. Never done this before. Bike ran like a champ otherwise. Am I looking a a bad head temp sensor AND fan? 09 Uly, 60k miles | ||
| Natexlh1000 |
The fan is turned on by the ECU supplying ground. I could be possible that the wire rubbed through and it's just getting grounded. | ||
| Portero72 |
You mean the fan wiring? Where it plugs in to the loom? Not looking forward to tracking down another worn wire... | ||
| Buewulf |
"You mean the fan wiring?" I've had several issues from insulation rubbing off of wires close to the ECM connectors. It wasn't obvious - I had to look very closely to see that the insulation was indeed worn all the way through. Hope for the easy fix! | ||
| Etennuly |
The ECM is a computer. Your fan is a motor. Say the fan operation is like clicking your mouse to open a program in your computer. It does not open as expected(fan electric overload) or like a program trying to open when something else is opening with it. Then you continue to click the mouse to try to open the program again.....and again.....and again. The ECM can become overloaded turning the fan on and off or on low or high out of control because it became overloaded with "switch on" input. If the fan has been sounding sick change it out. If the ET sensor was bad it would likely not be telling the ECM to turn the fan on at all. |
