The bus is turning but not turning on

[Vrad2019]

I first thought that it was a wire that we cut, but after looking at videos, the bus shouldn’t be trying to turn on. I then thought that it was a bad battery but when I charge it, it would read that it was charging. So I'm confused about what I need to do for the bus to completely turn on. Any suggestions?

[cadillackid]

what do you mean by turning but not turning on? no lights? no gayges? please fill out your details so we know what make / model / engine / year, etc..

[Jolly Roger bus 223]

yes please tell us what you have and explain more about turning but not turning on

[Vrad2019]

you know how when you turn the key of a vehicle and the engine turns before it turns on? that's what I'm talking about.
Bus type- International
year-2004

[Simplicity]

When the engine turns over it's called "cranking" because the crank inside the engine is turning around.

After successfully cranking the bus then "starts".

So, you bus is "cranking" but not "starting".

The bus brand (International) and year (2004) tell us little. We need to know the engine brand (cummings, international, etc.) and the transmission (probably an Allison).

Does the transmission shifter have a "T" shaped handle or electronic push buttons?

Per the "wire" you cut...ummmm, yeah, splice it back together. NEVER cut a wire without knowing what it does, especially on a school bus. School buses have all sorts of safety tricks that will cause an engine to not crank, or to crank but not start.

Finally, just because a charger says a battery is charging, does not mean it's holding a charge. Your battery should be at at least 12.7v up to say 13.7 (fully charged) to properly crank the engine.

I strongly suggest you do some education on how a diesel engine operates and read on the skoolie.net forums about "no crank" situations.

[o1marc]

It's cranking, but no fire.

[cadillackid]

It’s an 04 but we still don’t know what engine.. but if I have to guess it’s a 466e or 444e.. search for many threads here on crank no start.. there’s lots of things to try, fuses, CPS sensor, fiully charged batteries, loose wires..