Chipper Won't Stop

0311

0311

Location
Vermont
First post here guys.. Been creeping for a while, but now I need help.

I have an 06 Bandit 200XP w/ a Cummins 4bt engine that I can not kill, literally. It ran fine for months after I bought it, and one day after chipping I turned the ignition key off and removed the key and the chipper kept running. I pulled all the fuzes, shredded the serpentine belt, disconnected the battery, everything. Finally I pulled the fuel line and let it suck an air bubble. Now I've been forced to disconnect the air filter and choke the intake tube to shut it off.

It runs perfectly, idles perfectly, chips perfectly, just won't turn off perfectly. This ruled out a stuck injector. I replaced the Murphy Switch and the ignition switch, and still no luck. As soon as I touch the hot wire to the hot battery terminal, it starts up and won't stop..

Any help would be amazing!
Thank you!
Adam
 
Most diesels have a fuel shutoff system. Find the the high pressure fuel pump (follow the fuel lines after the filters) and it should have a wire going to it. My experience is that they are normal closed, so you need to check with the key off for power . Anyway if it's got power with the key off then it's probably a bad switch. Welcome to the forum. Nice truck in your avatar
 
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I appreciate the leads. I'll check into that this afternoon.

James- Thanks, the deuce is my new toy I plan to make into a chip box/log truck this summer. Maybe I'll create a thread about it if people are interested.
 
That would be great, I have a 97 F700 cab chassis that I want to turn into a short bed -10'- trailer toter. Pics of that deuce would be cool
 
Might just be ignition switch, probably fairly cheap. Chippers vibrate everything loose, then it corrodes behind the connection. My '06 Morbark you have to flick the key sometimes to get the switch to respond in off position. I'm always tightening things down.
 
Fuel shut off solenoid. Had the same happen on my chipper and a truck. You can reach in and manually open and close it to turn it off until you replace it.
 
Agreed on the fuel solenoid is not letting the engine shut off... But "it" may not be the problem. My Solenoid allows the chipper to run when it has 12V current going to it. There could be an under lying problem such as a shorted or chafed wire causing that power to be provided. As stated already everything on a chipper rattles and vibrates and more than once I have found wires that were chafed. Worth looking around. Reaching in to turn it off might work depending on the solenoid, but if its like mine you would have to unplug it taking the power away.
 
The machine is new enough to have a electric controlled fuel system, if the pump has power under normal operations then flying squirrel is right you can unplug it. Meaning if it normally opens under power to let fuel through then it would need power to start.
My Morbark needs power to open so it's normally closed. If it's starting but not shutting off it probably means at least on mine that the switch is broken and power is jumping to a normally off position inside the switch or the wire is worn through and up against another power source. A test light on the fuel solenoid wire will go along way to diagnosing the problem
 
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Well after the unanimous opinion about the fuel shut of solenoid, I have ordered one. However it's at least 2 weeks out, which is a bummer, but I'll make do.

Tomorrow morning I'll test it by manually opening or closing it.

I'm still curious how it bypasses the ignition and the murphy switch when I start it just by simply touching the hot wire to the hot terminal. No key in the ignition, no finger on the murphy switch? I'm no electrician at all...
 
The ignition and the Murphy switch are normally in series with, and cut the power to the solenoid thus shutting you machine off.
I think you have a bigger problem then the fuel solenoid as I stated earlier. There has got to be a short somewhere between your battery and starter (proved by it starting upon battery connection). Maybe in or on the starter solenoid? Some how it is energizing the starter and probably back feeding the electrical system forcing the fuel solenoid open. My guess is that fuel solenoid is fine, and there is an electrical issue causing it to open.

Have you taken the cables off the starter recently?? Any chance they may have been switched??
 
I had a feeling it was related to the starter as well, since it's constantly on if I leave the battery connected.

I didn't take the starter cables off. I fired it up a few times that first day and it ran perfectly, then the 4th time I started it, it ran perfectly again, just wouldn't shut off.

I will retrace every wire tomorrow to look for chafing/grounding, but I highly doubt I've missed that in my search already
 
Today's update:
I found part of the problem.. the fuel shut off solenoid had come disconnected at the hiem/ball joint end of the rod. Thanks for the advice on that, or I never would have even looked behind there for a problem!

However, the chipper still starts up with no key and no murphy switch. Just touch the hot wire to the hot terminal and off she goes. Pull the hot wire off, and she dies in about 5 seconds.

Still confused..
 
Ran the chipper for 5 minutes with the hot wire connected.. it killed the starter... now I need a new one of those too... where does it end?
 
If you connect the hot wire and the starter turns, of course it is going to continue to turn until you disconnect it or the starter burns out. There is a wire crossed somewhere. At this rate a mechanic might be cheaper than trying any further. :aburrido:
You had one problem... The solonoid... replaced the switch and something got crossed when hooking it up. Problems (especially electrical) bread problems when you aren't quite sure of the solution. Good luck. :envidioso
 
I think you must have connected the Murphy and Ignition switch wrong. Did that part of the problem start when you replaced those two things? You need to start over and map out what the symptoms are and when they started. It sounded like you pull a punch of wires trying to shut it down. Chances are good you crossed something.
 
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