| Author | Message | ||
     Chevroletss1965 |
I have noticed lately that the fan has not been coming on at all, even after the bike has been turned off. I live in arizona and have rod it in traffic on days where the weather was 100+ outside, still no fan. Bike has never stalled or ran bad, always runs like a champ. My bike has about 3200 miles, and I checked for blown fuse or unhooked wires. I also checked to make sure the fan spins freely, seems fine. I have a service manual and it says use a breakout box to diagnose, I priced a breakout box and they said about $600, yeah right...... Anybody know any easy ways to diagnose the problem? | ||
| Brineusaf |
is it throwing any codes? | ||
| Chevroletss1965 |
No, the check engine light has never came on. | ||
| Brineusaf |
Hmm... take a multimeter to the fan to see if it is actually getting power? | ||
| Davo |
This is what I did on my Uly to check fan operation. Check a manual or wait for a XBer to verify if the parameters are the same as the Uly. If they are different please chime in. Key off, fan on rear head temperature needs to be 338 F or hotter for operation. It is very hard for me a believe that you are cooler than that if you are bone stock. I was able to trip my fan into operating by installing a 220 ohm jumper from the ECM ET wire connector (PK/Y wire at pin 9 gray ECM connector) to ground. With the key and ignition on, I simply touched the jumper to ground for a moment. 220 ohms is the equivalent of 428 F which is the fan on, key on temperature. DO not disconnect the ET or you will get a trouble code. Either us a pin to connect in the connector socket or simply make a pin hole connection in wire. I used the small metal slide from the inside of a wire in-line splicer. Or find someone with a VDSTS to check the ET readings. If you own a Buell a VDSTS will pay for it self the day it shows up in the mail! Just call American Sportbike (Message edited by davo on September 20, 2006) | ||
| Newxb9er |
Same thing with me. Read: \Broken O2 Bung{http://www.badweatherbikers.com/buell/messages/32777/228833.html?1158871385,http ://www.badweatherbikers.com/buell/messages/32777/228833.html?1158871385} | ||
| Chevroletss1965 |
What do you mean by a 220 ohm jumper, is the PK/Y wire a 220 ohm wire and by using a jumper wire to ground it, the fan will operate? Sorry if that is a stupid question, just don't want to mess anything up. | ||
| Davo |
It is not a stupid question. I should have explained that the ET is a sensor that changes its resistance (ohms) to ground as it gets hotter. The hotter the less resistance for the ECM circuit to ground. For example on a xb12x: 104 F=25,647 ohms 374 F=463 ohms 410 F=303 ohms 572=0 (zero) ohms So if the ET wire shorts out to ground, the ECM will react as if the engine was overheating. I use a 220 ohm resister to give the ECM the intel that the engine is at normal fan on (421 F). There is a chart in the factory manual that gives the resistance specs and it also provides voltage specs so you can take real time (dynamic) readings with a DVOM to monitor the ET's operation. (pg. 4-52 for xb12x FSM) | ||
| Tbowdre |
did you install a right sided air scoop? heeheee sorry | ||
| Xb12r_nate |
LOL That was funny! Spit out my Goose  Nate |
