jacquigem
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We have used them for our last 2 Spanish ITV's with positive results. This year's coming soon so fingers crossed.
DPF cleaning
- Thread starter barge1914
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marchie
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Running to/from the Tip and Toolstation [en route on a 2.5 mile return journey] during the house renovations is how the Tiguan spends its existence; Friday evening, at the end of the 4 mile return journey to the supermarket, the DPF yellow warning light appeared. The suggested cure was to drive at a fairly constant speed, minimum 60kmh/37mph at 2000-2500rpm for about 15 mins, or roughly 9 miles to get the engine hot enough to burn the soot deposits and clear the filter
The only road where I could avoid stop/start driving was the A92 dual carriageway, where driving at 37mph is likely to become a suicide mission, so I improvised, switching between 4th & 5th gear to maintain the revs at 65mph-70mph and cleared the blockage [dashboard light disappears whilst driving when the soot is burned off] in about 7 miles and about 12 minutes. Did another lap between the 2 junctions just to make sure the proces had worked, and all is good.
Slightly strange to have to drive in low gear/high revs to deal with the DPF Sensor warning Light concurrently with the driving sensor urging me to change up from 4th to 6th gear for fuel economy/environmental reasons! You'd think the sensors would cross-communicate, but maybe the Germans *don't* have vays of making them talk ...
Steve
The only road where I could avoid stop/start driving was the A92 dual carriageway, where driving at 37mph is likely to become a suicide mission, so I improvised, switching between 4th & 5th gear to maintain the revs at 65mph-70mph and cleared the blockage [dashboard light disappears whilst driving when the soot is burned off] in about 7 miles and about 12 minutes. Did another lap between the 2 junctions just to make sure the proces had worked, and all is good.
Slightly strange to have to drive in low gear/high revs to deal with the DPF Sensor warning Light concurrently with the driving sensor urging me to change up from 4th to 6th gear for fuel economy/environmental reasons! You'd think the sensors would cross-communicate, but maybe the Germans *don't* have vays of making them talk ...
Steve
jacquigem
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Noticed the exhaust which was clean before was covered in soot internally after applying the cleaner. Hoping this is a good sign ?
Geek
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DPF cleaning cleans DPFs. So yes, they do work.
[Later] Just realised you meant DPF cleaner additives, not DPF cleaning services. Not what I was thinking of when I replied. I've no idea if the additives work. They probably just move the muck somewhere less accessible. [/Later]
However, the DPF ought to be kept clean automatically by the car.
If not, either there is a problem with the fuel metering and injection, or the car isn't being driven often enough or far enough.
DPF cleaning can unclog a DPF but it can't fix the problem that clogged it in the first place, so no, it doesn't work: it just papers over the cracks of a problem.
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mikejay
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In one of the car groups I am in a guy who works at a dpf cleaning place said additives can do more harm than good. He said they can cause the dpf to overheat and crack the internal structure. Google ai suggests the same if you use additives excessively or overdose. If anyone has a vag group vehicle a great app for keeping check on your dpf is vag dpf.
gasgas
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That's nothing. For the last about twenty years I have been riding my motorbike "without insurance". The on line insurance sites stupid ignorant computer programmers will not recognise that I passed my test in 1966 when I was 16 yrs old. Just because you can't now, they say "invalid test pass date'. So I am compelled, if I want a certificate, to make a false declaration when taking out insurance. I have to invent a date in 1967 or later . . . . . which invalidates the insurance as it is knowingly make a false declaration . . . . .
jacquigem
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Itv passed today. Cleaned soot of inside of exhaust before taking it . Returned and soot is back.
Mothership
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Forget the cleaners, forget Fiat Professional as well. Last yera is Spain dreaded engine light DPF problem...Fiat Professional garage...two hours regenerating, 100 Euro, 30kms back on, went back and said new DPF 3 months over 2,000 Euro...you can guess my reply. Kept erasing codes, back home, DPF specialist in Colwyn Bay, took it off cleaned completely overnight, refitted £350.00, now 10K miles later absolutely superb...before DPF 24 mpg average, now 29.6 mpg average and so much more low down power
barge1914
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Used DPF cleaner on drive across Scotland. Light finally stayed out. My problem I think is we usually have long periods away in the van doing a lot of very short daily hops. So rarely gets a chance to get good and hot to burn the soot off. I’ll see how it goes.
Drover
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They do . Or at least the last 44 ton mercedes I drove did. The regen started on a loading bay and filled the place with smoke...they were calling the fire brigade when I sussed out what it was.
marchie
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Naw, Trev. that's 'Rush hour' with the deadly fumes, not 'Russia' ...All these things to clean the air and save the planet, then you have to drive it like crazy to clean it out, seems all daft to me, meantime russia is filling the air with deadly chems which im sure travel in the wind all over the place.
Steve