DPF Woes....
- Thread starter Shelster
- Start date
Red line....
Was hitting it a few times on sunday, but will be taking it up high tonight and am banning myself from using 5th.
Ran data logging on trip home and oil deg went down by 5% almost Could see the filter temp start to increase, but not by a huge amount and no where near the hundreds of degrees I would expect on a regen
Something is deffo amiss with the motor.
Was hitting it a few times on sunday, but will be taking it up high tonight and am banning myself from using 5th.
Ran data logging on trip home and oil deg went down by 5% almost
Could see the filter temp start to increase, but not by a huge amount and no where near the hundreds of degrees I would expect on a regenSomething is deffo amiss with the motor.
Red line....
Was hitting it a few times on sunday, but will be taking it up high tonight and am banning myself from using 5th.
Ran data logging on trip home and oil deg went down by 5% almost
Something is deffo amiss with the motor.
Ban yourself from 4th while you're at it
lol this reminds me of my first mot when I had my discovery:
The emissions test was borderline. Guy at the garage asked how I drove it. At the time I was keeping the revs down for the health of my pocket.
He said DPF's need to be cleared out every so often, followed by the question "when did it last have a cambelt change?"
I told him it had been done about 2 months back. The response? "Good!"
He got in, started it up and stomped on the go-pedal up to the governor.
The cloud of black smoke was impressive and hung over the forecourt like some 1800's fog. There was also a patch of soot on the floor under the exhaust about the size of an A2 sheet of paper.
"You need to rag it once or twice a month to keep the filter clear mate"
This I duly did until it was time for the exhaust to be replaced, then I got shot of the DPF and the centre silencer for a straight through pipe all the way back to the back box. No more DPF clogging and a happy turbo, and slightly better spooling and economy. Iirc I blanked off the EGR valve at the same time too.
The emissions test was borderline. Guy at the garage asked how I drove it. At the time I was keeping the revs down for the health of my pocket.
He said DPF's need to be cleared out every so often, followed by the question "when did it last have a cambelt change?"
I told him it had been done about 2 months back. The response? "Good!"
He got in, started it up and stomped on the go-pedal up to the governor.
The cloud of black smoke was impressive and hung over the forecourt like some 1800's fog. There was also a patch of soot on the floor under the exhaust about the size of an A2 sheet of paper.
"You need to rag it once or twice a month to keep the filter clear mate"
This I duly did until it was time for the exhaust to be replaced, then I got shot of the DPF and the centre silencer for a straight through pipe all the way back to the back box. No more DPF clogging and a happy turbo, and slightly better spooling and economy. Iirc I blanked off the EGR valve at the same time too.
We have a 2014 VW Diesel which sometimes does short journeys, about 6 months ago a DPF light came on - Mrs was driving at the time so called me and I said "Rag the nuts out of it and take the long way home" - It cleared and hasn't come on since but we make sure we take it for a run at least once a week.
Interestingly upon the checking the manual it states "Get on to a motorway and drive spiritedly in a low gear, insuring revs are high" - then suggests 70mph in third held for at least 15 mins!
Interestingly upon the checking the manual it states "Get on to a motorway and drive spiritedly in a low gear, insuring revs are high" - then suggests 70mph in third held for at least 15 mins!
Soldato
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'Taking the long way home'
Not quite as romantic when you are clearing the DPF in your diesel.
Not quite as romantic when you are clearing the DPF in your diesel.
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Yup removal is mot fail.
taking it off and smashing the insides out then mapping the car to act like it's not there is not an mot fail
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Yea. But any changes like that would only effect cars sold after that comes into effect. Would be a good few angry people otherwise
Soldato
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DPFs are service items on my fiats at 70k I think it was (they are only 200quid), maybe the same on this one too.
This happened to me and my old horrible Citroen C4. The injector(s) were faulty and creating smoke that the DPF was then catching and using to clog itself up with. Citroens fix? Replace the DPF...
Soldato
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A quick google shows the temperature sensor in the exhaust is a known weak spot that causes regens to fail if giving incorrect readings, what temperature is it reading when the engine is running ? it should be in the 100s.
Yup removal is mot fail.
taking it off and smashing the insides out then mapping the car to act like it's not there is not an mot fail
Early discovery's were not fitted with a DPF so it's not so much of an issue for me. More modern cars however this is more of a problem, especially with all of the ecu stuff plugged into the engine and exhaust systems.
You should have seen the state of my inlet manifold before I blanked the EGR.
kind of like this
http://forum.lro.com/viewtopic.php?f=19&t=54695
I had to remove the inlet manifold and soak the damn thing in white spirit then scrub it out with a long bottle brush.
A guy I know described the EGR valve as follows - "Imagine walking about all day with a pipe connected to your arse and breathing in all your farts."
EGR valves might indeed reduce exhaust manifold temps to some degree and reduce emissions by syphoning off gas from the turbo manifold to be burned a second time, but it's a poorly tacked on system on my landrover.
Finally have it nailed down.
Is indeed the temp sensor for the DPF.
Went out this evening...25 mins at 3.5k rpm and stil no sign of clearing....wel not entirely true. The DPF light did go off to be replaced by the check engine light.
Stopped and checked on the ECU scan and this showed excessive regen time...shocker. Reset that and both check engine and DPF lights are off. Checked the figures and DPF blockage was down to 24% and the temp on the filter after that drive...36 degrees.
Guess this failure is screwing with the program for working out the DPF regen cycles and levels.
Now need to find me a replacement temp probe and get that fitted or I will just end up back to where I was.
you are right...DPF's do suck. How can these be good for the environment when I have so far had to do nearly 100 miles to get this sorted....glad we are going petrol
Is indeed the temp sensor for the DPF.
Went out this evening...25 mins at 3.5k rpm and stil no sign of clearing....wel not entirely true. The DPF light did go off to be replaced by the check engine light.
Stopped and checked on the ECU scan and this showed excessive regen time...shocker. Reset that and both check engine and DPF lights are off. Checked the figures and DPF blockage was down to 24% and the temp on the filter after that drive...36 degrees.
Guess this failure is screwing with the program for working out the DPF regen cycles and levels.
Now need to find me a replacement temp probe and get that fitted or I will just end up back to where I was.
you are right...DPF's do suck. How can these be good for the environment when I have so far had to do nearly 100 miles to get this sorted....glad we are going petrol