Bad news big repair

[K5lwq]

If having it factory then you are on the right path. However, I am not sure I trust your mechanic. Obviously your computer did not tell you the glow plugs did not work as you did not know until it got colder.

 

[Hay Dude]

If having it factory then you are on the right path. However, I am not sure I trust your mechanic. Obviously your computer did not tell you the glow plugs did not work as you did not know until it got colder.

Correct!
And that’s another really strange thing.…The dealer took a look at what I had already done. I thought maybe they could shed a little more light on the problem, but they didn’t give me much more info.
However, they had an older M125X in with the same problem a few weeks ago. It had No glow plugs, but it DID show a code. They Ohmed everything and tried new sensors- no dice.
They suggested an ECU replacement and $6000 later, the older M125X had glow plugs again.
So the question is, why would the older, but similar size tractor throw a glow plug code, but mine doesn’t?

 

[ptsg]

If you're trying to get the factory system working, then the best thing you can do is to actually get a service manual if you haven't got one already. Then start learning the circuit diagrams and try to figure whatever the ECU needs to see to get the glow plugs going.

 

[Hay Dude]

If you're trying to get the factory system working, then the best thing you can do is to actually get a service manual if you haven't got one already. Then start learning the circuit diagrams and try to figure whatever the ECU needs to see to get the glow plugs going.

I have the shop manual and did consult
I do have to check the ECU plug, though.
Maybe I get lucky and it’s just a cruddy plug or bad pin?
Kubota puts the ECU in a bad place. It’s under the battery in the front of the tractor and seems like it can get wet.

 

[ptsg]

I have the shop manual and did consult
I do have to check the ECU plug, though.
Maybe I get lucky and it’s just a cruddy plug or bad pin?
Kubota puts the ECU in a bad place. It’s under the battery in the front of the tractor and seems like it can get wet.

Could very well be. It's easier and cheaper to check the easy stuff first before throwing out the big bucks for a dealer visit.

 

[Hay Dude]

Could very well be. It's easier and cheaper to check the easy stuff first before throwing out the big bucks for a dealer visit.

I need to check that. Have seen many a harness with green corrosion.
The PCM in my 2008 F-350 was ruined by a leaking windshield. It leaked from the factory. Water ran into an ECM and caused all sorts of wacky things to happen. Horn wouldn’t work, wipers and turn signals would come on at same time, etc.

 

[K5lwq]

Correct!
And that’s another really strange thing.…The dealer took a look at what I had already done. I thought maybe they could shed a little more light on the problem, but they didn’t give me much more info.
However, they had an older M125X in with the same problem a few weeks ago. It had No glow plugs, but it DID show a code. They Ohmed everything and tried new sensors- no dice.
They suggested an ECU replacement and $6000 later, the older M125X had glow plugs again.
So the question is, why would the older, but similar size tractor throw a glow plug code, but mine doesn’t?

This is strange. What are the chances there would be two different models there with the same failure. Sounds more like we understand how bad this is but we just did it for another customer and he is happy. Give us $6000 and we will clean the same connectors for you. Lol

I do hate you have the issue though and hopefully you will find the solution.

 

[Hay Dude]

Yeah that bugs me to no end.
You would think my tractor being newer would store codes more so than an older tractor.
They said the M125x tractors ECU looked like it was under salt water for a couple years. It was all corroded (white dust, green stains, etc).

 

[LouNY]

Stop on down.
I can bring beer and great take out food.
Had my ass up in that engine compartment enough….

Not sure where on down is I thinking you were in the Carolinas.
And as I've gotten older my beer consumption has decreased.
I don't know were they have hide the relays on your Kubota but watching an over weight 70 year old crawl into them could be a sight
to be avoided.

 

[Hay Dude]

Not sure where on down is I thinking you were in the Carolinas.
And as I've gotten older my beer consumption has decreased.
I don't know were they have hide the relays on your Kubota but watching an over weight 70 year old crawl into them could be a sight
to be avoided.

I’m on PA/DE border.
The relays are real easy access.