John Deere sensors

[Muck Spreader]

Will be fine testing to ground with a multimeter, you’ll probably find ~8v on each wire.

Forgot to mention there is a Steinbauer Pbox chip spliced into the two pump wires.
Tested it at the plug going into the pump. With the chip connected one wire was showing 2-3 volts the other 0.09 volts when cranking. With the chip unplugged it was then a constant 9volts cranking or not, other wire similar to before, max of around 0.09 volts.

 

[Timbo]

Forgot to mention there is a Steinbauer Pbox chip spliced into the two pump wires.
Tested it at the plug going into the pump. With the chip connected one wire was showing 2-3 volts the other 0.09 volts when cranking. With the chip unplugged it was then a constant 9volts cranking or not, other wire similar to before, max of around 0.09 volts.

Now he tells us....

Remove the chip and try again. Wouldn't be the first time one of those has shorted internally.

 

[Phil P]

Now he tells us....

Remove the chip and try again. Wouldn't be the first time one of those has shorted internally.

Yep, tuning boxes are the work of the devil

 

[Muck Spreader]

Yep, tuning boxes are the work of the devil

Unfortunately, it doesn't seem to make any difference. I find it odd to have no smoke at all from the exhaust when cranking it over. I would have thought with most problems other than the injection pump solenoid you would get a bit of something.

 

[Timbo]

Unfortunately, it doesn't seem to make any difference. I find it odd to have no smoke at all from the exhaust when cranking it over. I would have thought with most problems other than the injection pump solenoid you would get a bit of something.

I would have the pump overhauled and the ECU checked by David King. You did check the ecu multiplug for pushed back pins??

 

[Tractortech]

Now Then..
Does the glow plug light work??
Does the glow plug light flash at all??
Have you looked in the ECU for error codes??

There are 2 live wires to the ECU,,,,
A2 - Switched live
K1 - Unswitched live
J2 - Ground..

 

[Muck Spreader]

I would have the pump overhauled and the ECU checked by David King. You did check the ecu multiplug for pushed back pins??

The pump was done only about 500/600 hours ago. For reference, I think someone on here has said that Dave King won't do JD ECU's. Yes, checked all the pins and wires to sensors, apart from the foot and hand throttles.

 

[Muck Spreader]

Now Then..
Does the glow plug light work??
Does the glow plug light flash at all??
Have you looked in the ECU for error codes??

There are 2 live wires to the ECU,,,,
A2 - Switched live
K1 - Unswitched live
J2 - Ground..

The glow plug light does work, but only flashes if the control wires to the pump solenoid are disconnected as you would expect. I don't have access to any service manager software to check the ECU but I am stating to think I will have to call out our local JD boys. What would the unswitched live be controlling?

 

[Tractortech]

The unswitched live is probably the main supply. The switched supply will liven the ECU up.
If any JD ECU is to fail, that's the one. The telehandler used the same controller but with different software.
Have you another tractor or handler you can swap it off??

 

[czechmate]

The glow plug light does work, but only flashes if the control wires to the pump solenoid are disconnected as you would expect. I don't have access to any service manager software to check the ECU but I am stating to think I will have to call out our local JD boys. What would the unswitched live be controlling?

I would certainly give mr bennett a miss
Agri 86 seem to have been on a downhill slide the last couple of years.
Can never get micards out
One of the top mechanics of 20 years with Ricards has gone man in van but was instantly busy, maybe he won’t be so much so now. I can give you his number if you like. Obviously he doesn’t have that much Deere experience.
Maybe 86 is your best bet but our last couple of bills from them were from a fantasy

 

[Muck Spreader]

The unswitched live is probably the main supply. The switched supply will liven the ECU up.
If any JD ECU is to fail, that's the one. The telehandler used the same controller but with different software.
Have you another tractor or handler you can swap it off??

No, fortunately my other tractors are all free of any ECU's and as a consequence never cause much bother.

I would certainly give mr bennett a miss
Agri 86 seem to have been on a downhill slide the last couple of years.
Can never get micards out
One of the top mechanics of 20 years with Ricards has gone man in van but was instantly busy, maybe he won’t be so much so now. I can give you his number if you like. Obviously he doesn’t have that much Deere experience.
Maybe 86 is your best bet but our last couple of bills from them were from a fantasy

I've got his number, but I guess I need someone with service manager and another L12 ECU, otherwise I am going round in circles.

 

[czechmate]

No, fortunately my other tractors are all free of any ECU's and as a consequence never cause much bother.

I've got his number, but I guess I need someone with service manager and another L12 ECU, otherwise I am going round in circles.

i agrée
86 then
Do you use Chauvigny or the other, a similar distance?

 

[Muck Spreader]

Just to let folk know the outcome of this for future reference, nothing electrical at all. The main dealer came out a couple of times but couldn't get to the bottom of it. It was loaded on to a transporter and taken to their workshop. Turned out that one injector was broken they replaced all the injectors, this got the tractor running again but not satisfactorily. So they then took the head off and rebuilt it with new valves etc, skimmed, new head bolts and head gasket. Running fine now and a bill of around 4000.

 

[seedman stains]

Sorted with a guarantee then, Pac money comes in handy at this time of year!!!!!!

 

[NZ Tech]

The 2 wires that go into the shutoff solenoid on the injection pump rear end need to be over 9vlts. If they aren't.. the ecu might have failed. Best see if a laptop will connect to the tractor and see if there is an ecu online. Also check the 12vlt power feeds in the fuse box x2.

 

[NZ Tech]

The springs that break in the injectors often go back to the pump and destroy it.


Stanadyne de10 fuel systems and associated electronics are what I would call junk.

Just to let folk know the outcome of this for future reference, nothing electrical at all. The main dealer came out a couple of times but couldn't get to the bottom of it. It was loaded on to a transporter and taken to their workshop. Turned out that one injector was broken they replaced all the injectors, this got the tractor running again but not satisfactorily. So they then took the head off and rebuilt it with new valves etc, skimmed, new head bolts and head gasket. Running fine now and a bill of around 4000.

 

[seedman stains]