Supacat
Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11018
 
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blackwolf wrote:It will be interesting to hear what happens when/if the fuel strategy starts dumping masses of fuel down the exhaust to start the regen!
The fuel is normally burnt in the cat so i don't think this would be a problem, unless part of the DPf software is still running but without the inputs to ensure that the temperatures do not exceed the operational limits of the turbocharger and the catalytic converter. I do agree with you on the badly done is worse than nothing point.
Do you know what was done with all the connections? On EU5 vehicles, the catalytic converter and DPF incorporates bosses for the attachment of two pressure pipes, and the installation of a HO2S (heated oxygen sensor) and three temperature sensors.
Your light may have come on from a back pressure signal from the differential pressure sensor. This would mean that at least part of the DPF software has not been deleted; alternatively, it may be that the sensor/light has got a signal through an inadvertent grounding or short circuit.
Active regeneration generally occurs every 250 miles but i don't know how many cycles of this it would need to cause the warning light to illuminate under normal but failed operations.
From a brief read of the workshop manual it's worth noting exactly how the software is setup:
"The DPF software can be divided into three separate control software modules; a DPF supervisor module, a DPF fuel management module and a DPF air management module. These three modules are controlled by a fourth software module known as the DPF co-ordinator module. The co-ordinator module manages the operation of the other modules when an active regeneration is requested. The DPF supervisor module is a sub-system of the DPF co-ordinator module."
In other words, it seems quite complex, and hopefully your professional has the full understanding to disable it all correctly and with no unintended consequences on other parts of the engine.
I'm no great fan of the dpf equipment, but wonder if the same result could be better achieved by either:
1. If an EU4 cat is actually the same physical dimensions as the EU5 combined cat/dpf, and if so if they could be jut swapped over?
or
2. Knowing that a dealer can force regenerate the DPF by connecting an approved Land Rover diagnostic system to the vehicle which will perform an automated static regeneration procedure to clean the DPF; having your professional provide a widget with some software you could plug in to do the same at home. |
31st Dec 2015 10:31am |
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Juhulia
Member Since: 10 Jul 2013
Location: Dresden
Posts: 17
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[quote="Supacat"]blackwolf wrote:1. If an EU4 cat is actually the same physical dimensions as the EU5 combined cat/dpf, and if so if they could be jut swapped over?
or
2. Knowing that a dealer can force regenerate the DPF by connecting an approved Land Rover diagnostic system to the vehicle which will perform an automated static regeneration procedure to clean the DPF; having your professional provide a widget with some software you could plug in to do the same at home.
Well -
forget about 1, the pipes are completely different.
forget about 2, if the DPF is not in its original state.
He shall have a pipe fit for the 2.2 EU3 Defender. He can order directly from retailer. And shall order a new ECU also.
I'd go directly to Land Rover and make that crappy car into an EU3 2.2 Defender.
I've just been wondering why JLR/BAS/nanocom won't give us tools to force DPF regen by ourselves.
Now I know: All of them wanna sell their own products.
Now I've heard Bosch will do this for us. That's really good news, guys 
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31st Dec 2015 2:06pm |
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