How to make a dpf regenerate?
#1
How to make a dpf regenerate?
OK, my Corsa just cost me £882 for a new dpf and exhaust...and that was using non-VX parts.
I've just been let down by the local VX dealer who booked me an appointment yesterday to look at a newer car, then left me sitting 15 minutes, before I finally came home again!
So, question: How do I MAKE the dpf regenerate as my youngest, who has been doing 100 mile round trips on motorway every day, now refuses to drive the Corsa, and it's going to end up pottering round town
I've just been let down by the local VX dealer who booked me an appointment yesterday to look at a newer car, then left me sitting 15 minutes, before I finally came home again!
So, question: How do I MAKE the dpf regenerate as my youngest, who has been doing 100 mile round trips on motorway every day, now refuses to drive the Corsa, and it's going to end up pottering round town
#2
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Make sure the ECU has no fault codes, the engine gets up to operating temperature and the exhaust gets above 400degrees. Also ensuring the fault that caused the previous DPF failure has been properly rectified.
You can also add a cerium-based additive to the fuel tank which can lower the soot burn off temperature which allows more passive regeneration at lower speeds.
You can also add a cerium-based additive to the fuel tank which can lower the soot burn off temperature which allows more passive regeneration at lower speeds.
Last edited by ALi-B; 25 September 2015 at 01:49 PM.
#3
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My insignia regenerates at around every 300 miles, I do a lot of slow stop start journeys. Vauxhall told me to go on the motorway for a good blast and keep the speed over 40mph and revs over 2000rpm. Sure enough, it works. The car idles slightly faster and sounds different when it's regenerating.
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#8
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Then when it's full someone can rip it out and chuck it away so all those particulates can be dumped together in harmony.
Or maybe someone can jet wash it out and all the crap can go down the drain.
Or if we're really lucky, your neighbour may remove his and smash the guts out of it with a hammer dispersing most of the particulates in a certain place and the rest the bin men can enjoy!
Such an awesome idea.
It's a bit like the government deciding we shouldn't dump in the toilets to prevent contaminating the water system. Making us all wear nappies so no **** goes down the sewers. Then we can chuck all the nappies in one place and it can all collect somewhere else.
#9
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It can also show exhaust back pressure which is another handy indicator of the filter's status (the higher the reading the more its blocked; it should be near zero millibars at idle and around 10 to 40 millibar at 2000rpm fast idle ).
There are lots of additives out there the aid regeneration, we use either Forte or Wurth which isn't as widely available to the public. But the main active ingredient in most brands is the Cerium, so as long as it contains it the brand shouldn't matter. You'll probably find some stuff on the shelf in Halfrauds (Wynes, STP, Redex etc) labelled as DPF cleaner or restorer.
I wouldn't advise using it all the time; once every six months/3000miles or whenever you notice a problem.
Or maybe someone can jet wash it out and all the crap can go down the drain.
Last edited by ALi-B; 25 September 2015 at 07:27 PM.
#14
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Yep glad I sold mine 😌 nothing worse than finishing work at 6pm start the car and ding DPF warning light comes on.Arghhhh for **** sake 😩 now have to purposely drive on the motorway to clear this stupid fecking thing.btw you don't have to drive in 4th gear .can do a normal motorway drive and the DPF will clear after about 20 minutes.
Last edited by DYK; 26 September 2015 at 07:16 AM.
#15
A fiat diesel was never going to be a good idea in a vauxhall
#19
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It's a clever means of filtering out the particulates from diesel exhaust and keeping it out of our lovely environment, making the world a healthier, greener place and saving millions of lives..
Then when it's full someone can rip it out and chuck it away so all those particulates can be dumped together in harmony.
Or maybe someone can jet wash it out and all the crap can go down the drain.
Or if we're really lucky, your neighbour may remove his and smash the guts out of it with a hammer dispersing most of the particulates in a certain place and the rest the bin men can enjoy!
Such an awesome idea.
It's a bit like the government deciding we shouldn't dump in the toilets to prevent contaminating the water system. Making us all wear nappies so no **** goes down the sewers. Then we can chuck all the nappies in one place and it can all collect somewhere else.
Then when it's full someone can rip it out and chuck it away so all those particulates can be dumped together in harmony.
Or maybe someone can jet wash it out and all the crap can go down the drain.
Or if we're really lucky, your neighbour may remove his and smash the guts out of it with a hammer dispersing most of the particulates in a certain place and the rest the bin men can enjoy!
Such an awesome idea.
It's a bit like the government deciding we shouldn't dump in the toilets to prevent contaminating the water system. Making us all wear nappies so no **** goes down the sewers. Then we can chuck all the nappies in one place and it can all collect somewhere else.
#22
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visualy not tampered with they cant remove them
#26
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However, if its been botched with visual bird-sh*t weld, it will be obvious its been tampered with. Although I don't think "dodgy welds on DPF" is a valid reason for rejection either.
You have to remember this is a system where its designers intended for a black-and-white solution to a grey problem with only an average understanding of working on vehicles. You can't even put "screw in tyre" as a MOT advisory....the system thinks you are using profanities!!; Screw is in the MOT system's swear filter
#27
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This is my saving grace. On the coupe (330d at least), they're a pain to see and access, so although labour intensive to remove/open/gut/re-fit, they're also hard to check if tampered with due to location and heat shields etc.
Which is nice
#28
I have a car which should pass emissions. I don't WANT to have to book a special, travel to it etc etc. I had enough of that with 200 mile round trips for the Scoob MoT.
As for £822, I would have been into all but £400 of that anyway: new exhaust, new intercooler, new air filter, labour etc.
How much would the removal, gutting, welding, replacement, remap cost? I bet I'd not have been far short of that £400 anyway?
NOW I know I have no worries again and any MoT garage can, and will, pass it.
#29
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Yeah, but this is my point Andy.
I have a car which should pass emissions. I don't WANT to have to book a special, travel to it etc etc. I had enough of that with 200 mile round trips for the Scoob MoT.
As for £822, I would have been into all but £400 of that anyway: new exhaust, new intercooler, new air filter, labour etc.
How much would the removal, gutting, welding, replacement, remap cost? I bet I'd not have been far short of that £400 anyway?
NOW I know I have no worries again and any MoT garage can, and will, pass it.
I have a car which should pass emissions. I don't WANT to have to book a special, travel to it etc etc. I had enough of that with 200 mile round trips for the Scoob MoT.
As for £822, I would have been into all but £400 of that anyway: new exhaust, new intercooler, new air filter, labour etc.
How much would the removal, gutting, welding, replacement, remap cost? I bet I'd not have been far short of that £400 anyway?
NOW I know I have no worries again and any MoT garage can, and will, pass it.
Regards mine, it was approx £650 for DPF gutting and an Evolution Chips remap. Only smokes when I hammer my right foot down. I dunno for Vauxhalls, I don't personally like them having had a few Astra/Corsa courtesy cars over the years (that's my 'alcazar car luck' kicking in).
#30
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AHA!
Was the old one leaking?
If so, thats a major reason your old DPF failed...leaking intercooler = lots of soot as the MAF sensor is reading air that's just leaking straight back out again causing over-fueling. Where does that soot go? Into the DPF and overwhelming it before has chance regenerate.
Was the old one leaking?
If so, thats a major reason your old DPF failed...leaking intercooler = lots of soot as the MAF sensor is reading air that's just leaking straight back out again causing over-fueling. Where does that soot go? Into the DPF and overwhelming it before has chance regenerate.
Last edited by ALi-B; 27 September 2015 at 01:29 PM.