I have a 2007 (titled 2008) Blue Bird conventional school bus. It does not appear to be a Vision. The hood is of a different flimsy style, more like a big potato chip than a respectable hood. Anyhow, the problem is that the fan clutch does not engage in neutral. It engages at 210 degrees going down the road here in south Texas. But in neutral, it does not engage. The temp will keep going to 250 if I let it. The motor is a Cummins. I thing that it is that 6.7L, like they have in the high bred C2 Freightliners. I have a temporary hot wire (w/toggle switch) going to the clutch so that I can engage it while going down the road. WHY NOT IN NUETRAL???? WHY DOES IT WORK GOING DOWN THE ROAD??? Can someone who is familiar with this setup help me? Thank You, Daniel Hanson
It depends on what kind of clutch it is. Viscous with the thermostatic spring coil in the front might not see enough hot air through the radiator with the vehicle sitting still to activate the clutch. The radiator fins plugged with dirt and bugs can contribute to this.
If you leave it in gear but stopped (bus not moving) does it work? If not not it seems it needs a speed input to function. If it does not function in neutral or in gear, sounds like a programming function on the engine side Just throwing some ideas out there.
2007 BLUEBIRD Fan Clutch not engaging in Nuetral
Posted - 07/10/2019 : 4:05:00 PM
