T320 Starts up but shuts down seconds after... No codes flashing

[Hardscapes89]

Hi, I am having some starting issues with my 07’ T320. I attempted to start up the machine and when the motor turned over and fired it only starts up for a couple seconds then shuts down with no codes flashing. No sputter or signs of lack of fuel flow, fuel primer pump doesn’t look constricted, changed fuel filter and checked fuel flow fuse/relay and even charged the battery. Unfortunately these attempts never solved the issue, it like something is shutting off fuel directly to the motor. Since the machine is not flashing codes its difficult to determine the cause of the immediate shutdown. Please keep in mind we have had 32 and below temps for the past week. I called bobcat and they said just bring it in…Naturally. I have a shop where we service our equipment so the ability to work on the machine is no stranger to me.. If anyone has suggestions or possible leads to a solution it would be greatly appreciated. Thanks for your time.

 

[SkidRoe]

It sounds like a fuel shut off solenoid issue to me. It would appear to be pulling, but not holding. That's where I would start. HTH - SR

 

[mmsllc]

It sounds like a fuel shut off solenoid issue to me. It would appear to be pulling, but not holding. That's where I would start. HTH - SR

Try holding the fuel shut down ever to the run position. Try to run the machine like normal. If it seems ok, I would say the solenoid has gone bad. You can also visually inspect this with a helper turning the key for you. If it releases before it should, try replacing the solenoid.

 

[Bobcatdan]

Try holding the fuel shut down ever to the run position. Try to run the machine like normal. If it seems ok, I would say the solenoid has gone bad. You can also visually inspect this with a helper turning the key for you. If it releases before it should, try replacing the solenoid.

The fuel solenoid goes into the pump, no external linkage. The solenoid can be removed and the unit started. If it stays running, you can snub it against the brakes to shut it off. I'd start real simple with a fuel filter. Also when it dies, hold the headlight switch before you touch the key, just because the alarm isn't sounding, doesn't mean it won't show a code. I'm kinda not feeling a fuel solenoid as those will set all sorts of codes pretty easy.

 

[mmsllc]

The fuel solenoid goes into the pump, no external linkage. The solenoid can be removed and the unit started. If it stays running, you can snub it against the brakes to shut it off. I'd start real simple with a fuel filter. Also when it dies, hold the headlight switch before you touch the key, just because the alarm isn't sounding, doesn't mean it won't show a code. I'm kinda not feeling a fuel solenoid as those will set all sorts of codes pretty easy.

Experience is key. I'm so used to external shutdown solenoids that I assume most / all of them have one.