L3130 won't start......Intellipanel the problem?

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ex-Sea Bee Mike

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Kubota B7800 ; Kubota L3130; Kubota B6100;
Jan 12, 2023
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Sixes, OR
Good morning all, I have a L3130 that won't start / stay running. I know that the stop solenoid is OK. This tractor doesn't have an OPC timer so I'm wondering if that function is done by the intellipanel or the ECU ? The tractor runs well when the stop solenoid is bypassed so I know the fuel system is OK. Starter motor work so I'm assuming that means all the safety switches are OK.

Who'd have thought that in order to be a farmer you'd also need to be an expert tractor mechanic? Any help is appreciated?
 
R

Russell King

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You need to describe the problem in more detail…

Does the engine spin with the key and just not start running?

Does the engine not spin at all when you turn the key?

Sounds like you can get it spinning and running when you bypass the stop solenoid but what are you doing to bypass it? If you know the solenoid is good, how do you know that? Do you know if it gets the correct signal to open fuel flow from the key switch?

There are also solenoids that pull in and hold on the fuel. Is that the style you have? Did you check that it both pulls in and then disconnects the pull in when it holds? Did you check if it actually holds the fuel flow on?
 
E

ex-Sea Bee Mike

New member

Equipment
Kubota B7800 ; Kubota L3130; Kubota B6100;
Jan 12, 2023
25
1
3
Sixes, OR
Russell King said:
You need to describe the problem in more detail…

Does the engine spin with the key and just not start running?

Does the engine not spin at all when you turn the key?

Sounds like you can get it spinning and running when you bypass the stop solenoid but what are you doing to bypass it? If you know the solenoid is good, how do you know that? Do you know if it gets the correct signal to open fuel flow from the key switch?

There are also solenoids that pull in and hold on the fuel. Is that the style you have? Did you check that it both pulls in and then disconnects the pull in when it holds? Did you check if it actually holds the fuel flow on?
Click to expand...

Hello Russell, Thanks for the reply. I bought a new solenoid and installed it and didn't fix the problem. I got the engine to run by taking an old solenoid and cutting off a 1/2 of the pull rod and installing it. Engine started and ran well. Used the manual lever to stop. Mowed a hay field for several hours with no problems.

Starter works fine. I can hear the solenoid click and then I wait for glow plug light to go out and I can hear solenoid click again. No start. If I turn the key and don't wait for glow plug it'll fire then immediately die. So far everything I check is ok except for ECU and Intellipanel which I''m not sure how to check. I'm working out of a WSM that I got from kabotabooks and it doesn't offer a lot of help. The schematic doesn't show a OPC timer relay. It does show a solenoid relay buried in the dash that I haven't had a chance to check. Thanks again for taking the time to reply!
 
North Idaho Wolfman

North Idaho Wolfman

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Really would help to know what L3130 your working with, DT, GST, HST?
The intellipanel and the ECU does not control the stop relay and stop solenoid, the OPC does.

It does have an OPC timer
Your using a WSM for a EU / AU model.
Try the US version and you'll see the OPC

1782349957570.png
 
R

Russell King

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L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
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Ok it sounds like you have a true shut down solenoid (not a hold to run solenoid).

If that is what you are saying is that you basically cut the rod off the solenoid, tractor starts and runs and you have to manually shut the fuel off to stop the engine.

Hopefully someone with better knowledge than me will be along to help you out but I’ll make a few suggestions for you to try.

If it is a true shut down solenoid then you should be able to see the rod retract for a few seconds and then return to the run position. Use the new solenoid and see if you can bench test it by applying power to it and retract the rod then release power and rod moves back out. (Reference the WSM on how the wires should be connected.)

Then you can test the tractor wiring to see if the tractor wires are actually providing power when you turn the key from run to off. If not that is the problem to resolve. I believe that there is some relay/timer that controls that. It could be in the ECU but I believe it is a separate part.

I assume that there is a fuse to that relay so you might verify that it is good (or replace it) and that there is power to the fuse block terminal and eliminate any corrosion. You might be surprised how many times that is the problem even after the fuse has been checked by visual inspection.
 
R

Russell King

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Lifetime Member

Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Jun 17, 2012
7,815
3,038
113
Austin, Texas
Dang it, the timing thing happened again!

NIW has identified the problem as I was typing
 
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