I was riding home on my 2004 VFR800 in approximately 90 - 92 degree heat yesterday, coolant temperature got up to about 235 degrees. Soon after that, I rolled to a stop at an intersection near my house when she decided to quit. I gave her a few minutes to cool down in the shade, then I reattempted to start her up. Battery was just about completely drained -- not enough cranking amps to turn her over. I took the bettery inside, 12.1 volts -- far too low to start the bike. I'm thinking I may have a ground on the cooling fan circuit. Anyone else hear of this problem or have any personal experience?? Thanks fellas.
Do you mean a short to ground? It is not clear but did the fan operate? Check your battery after it is charged. It should be 13.2-13.8 volts If the battery is more than 3 years old you might consider a replacement. Those fans are rated for thousands of hours. When the fan is NOT in operation does the battery lose charge? The fan thermo switch does not turn the fan on until 260º ,measured at the bottom of the radiator. The 235º is measured from the thermostat housing. Unplug the radiator fan and see if the battery goes dead. Or if it is on a separate fuse take the fuse out.
................................ Fan has its own fuse and a ground connection; fuse would have blown if power to fan wires touched ground. You need to recharge your battery, need a new battery, or a new hypothesis.
