New Holland Boomer 37 in DPF Shutdown Mode

[Jrasband]

The wires he is rewiring around the ECU(to remove limp mode) straight to the ignition are the ones shutting the tractor off. The other wires going to to the solenoid are left unplugged

 

[NBABUCKS1]

Huge huge thanks to jrasband for holding my hand through this.
Here is a video if anyone else stumbles across this.

 

[Jackfr]

Huge huge thanks to jrasband for holding my hand through this.
Here is a video if anyone else stumbles across this.

Were you able to just unplug the throttle or did you need to make up jumpers?

 

[Jrasband]

Were you able to just unplug the throttle or did you need to make up jumpers?

You have to run a custom throttle cable because the factory is electric.

 

[Jackfr]

You have to run a custom throttle cable because the factory is electric

I understand that a custom throttle cable is needed. Can you just disconnect the electric one or do you have to do any wiring to eliminate it? Did you consider making up a piece of exhaust pipe "test Pipe" to replace the DPF canister? Have you figured out away to stop the warning lights on the dash other than tape?

 

[Jrasband]

You can get rid of the lights on the dash by removing the bulbs in the cluster.

The tractor will beep when it is in gear through the ignition, I have not fixed this one yet, it is only annoying when idling and putting around.

No reason to remove the DPF filter housing entirely, just remove what is inside.

The throttle is controlled by the levers on the injection pump, when you rewire the solenoid you will lose control of the throttle through the computer, solution is to run cable.

 

[NBABUCKS1]

The tractor will beep when it is in gear through the ignition, I have not fixed this one yet, it is only annoying when idling and putting around.

Finally had a chance to run it this weekend and I didn't have this issue at all. No unexpected beeps, just lights on the dash I can ignore.

This saved me $5000 (and future headaches when it stopped working again). Thanks again my man.

 

[Ky1200]

Best I can explain the way I see it is: You can remove all the exhaust filters on the tractor thereby giving it a free flow and the pressure differential sensor reads this as there being zero differential. It sends this to the computer and the computer reads it as a problem and shuts the tractor down to a limp mode. To overcome that you have to hook twelve votls diirect to the fuel solenoid so it stays all the way open. In normal operating mode with the dpf filters in place there is quite a bit of back pressure from the filters.
I was very surprised at how much resistance there was in the filters by blowing air in one side and feeling on the other side with your hand. lots of drop in air flow.

 

[NBABUCKS1]

if you are correct and i actually knew what the correct signal was coming off the pressure differential sensor for clean DPF i wonder if you could 'spoof' that signal (is it 0-5 v dc?) and then get out of limp mode and still have use of the factory throttle.


problem is I still think i'd have to goto the dealer to get them to clear the existing codes....

 

[Bearsixty7]

if you are correct and i actually knew what the correct signal was coming off the pressure differential sensor for clean DPF i wonder if you could 'spoof' that signal (is it 0-5 v dc?) and then get out of limp mode and still have use of the factory throttle.


problem is I still think i'd have to goto the dealer to get them to clear the existing codes....

Maybe install a potentiometer in that sensor circuit and vary the resistance/voltage?

 

[LouNY]

Or put one sensor in the exhaust (high) and one on a blank mount on the pipe at atmospheric pressure (low)

 

[NBABUCKS1]

So I googled a bit and it does appear to be between 1-5 volts for the signal on other DPF pressure sensors.
If anyone who has a DPF that is functioning normal can you pull the voltage on the signal for a normal functioning DPF?
In an ideal world I'd put in a resister on the signal and have use the of actual factory throttle.

 

[sennai]

New to the forum, I have the Workmaster 37, 2016, that does the auto regen every 4 hours, and normally it takes 30-40 minutes for a cycle.

Lately I have an issue with the dpf regeneration cycle. For the last couple of times the regeneration cycle ran more or less for an hour and a half, but completed successfully.
During these cycles, at the start, the Regen and Temperature lights will be ON, but for most part the Temp light will go OFF and a steady Engine Warning & the Regen will be ON, after some time the Engine Warning light will be OFF while the steady Temp light will be ON, this change of lights will go on few times and finally with the accumulated time of approximately 40 minutes of the Temperature light ON, the regeneration cycle will be completed.

But the last time, the cycle started and kept running for two and a half hour, with the above mentioned lights alternating, but this time the Temp light will be ON for a minute or two at a time, and the regen cycle never got finished. After 2.5 hours, the Regen light started the 2 seconds flashing, with steady Engine Warning light ON. I gave up waiting that long stopped the engine after burning half tank of fuel.

From this, I am suspecting a faulty temperature sensor.

My question now is, Can I do the DPF delete at this stage without replacing the sensors, OR I need to seek the dealership’s help to replace the sensors, clear any code and then dare to delete the DPF?

Any suggestion is much appreciated.

 

[FERLING]

I'm having the same issue on a 2019 Workmaster 50. How can I force a regen? or what needs to be cleaned?

Have a Workmaster 50 made in 2015. Everything is automatic with no intervention from operator.

 

[Jrasband]

You don't have to worry about sensors tractor does not need them to run after delete.

 

[sennai]

You don't have to worry about sensors tractor does not need them to run after delete.

Thanks.
I have few more questions before I jump into attempting the delete.
- Do I disconnect the battery before modifying the black & white wires, or just taking the ignition key off will be enough
- Before delete, when key is off, does the ECU get a constant power? and will it continue to get that power after delete the same way, OR is the ECU normally off when the key is off and the deleting is not interfering that circuit?
- After delete, do you still see the hours of operation going up normally, Coolant temperature, fuel level, engine rpm pointers moving, PTO indicator lite on when PTO is operational, etc.
- After delete, Do you still have other sensor lites functioning and indicators like, oil pressure, glow plug,etc, working as before?
- What throttle cable did you use.
- Finally, in your earlier reply in February you had mentioned that you have used four tanks of fuel since the delete, it is October now and how is your experience since and do you have any advice to add.

Thanks to you and others who have shared their experience here.

Cheers.

 

[Jrasband]

Disconnecting the battery before starting is a good idea.

I dont know if ECU gets constant power. Nothing changes except power to the injection pump solenoid.

All functions work like there suppose to after delete.

I used a random throttle cable my friend had in his shop. Foot throttle is obsolete, cable will be run to hand throttle.

I have put over three hundred hours on the tractor since then and have had zero problems.

 

[Jrasband]

 

[sennai]

Disconnecting the battery before starting is a good idea.

I dont know if ECU gets constant power. Nothing changes except power to the injection pump solenoid.

All functions work like there suppose to after delete.

I used a random throttle cable my friend had in his shop. Foot throttle is obsolete, cable will be run to hand throttle.

I have put over three hundred hours on the tractor since then and have had zero problems with tractor.

Thank you very much for the details.

 

[Jrasband]

My question now is, Can I do the DPF delete at this stage without replacing the sensors, OR I need to seek the dealership’s help to replace the sensors, clear any code and then dare to delete the DPF?

Yes you can this was the case with my tractor. It is a very easy job to do not very daring.