I'd be looking at injection rates first (I assume oil deg index has been reset along with oil change?)
Technical "engine failure" warning & lack of power
- Thread starter RichDoblo120
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Technical "engine failure" warning & lack of power
Thanks T14086. Neither the oil degredation index nor the service indicator have been reset. The car was fully serviced (oil & oil/fuel/air filters) when I first got it 1,000 miles ago by the local garage on the Scottish Island I was working on at the time.
My ELM327 scanner (£30 from Ebay) shows fault code P2002 - "Particulate Trap Efficiency Below Threshold". I cleared the fault code using Easy OBD software, but it came back on within 3 miles.
Reading through this forum I see that the following can prevent the DPF from regenerating:
1. EGR problem.
2. ECU software not upgraded to a version that makes regen less likely to fail.
3. Malfunctioning clutch sensor - car thinks the clutch is engaged so prevents regen.
4. Malfunctioning brake sensor - car thinks brakes are engaged.
5. A problem with injection rates.
6. Non reset of Oil Regeneration Index.
I don't have much faith in the local Fiat dealer. They charged £68 for their last misdiagnosis of "You must change the DPF", which I did at a cost of £530 and it made no difference whatsoever. I feel if I went back there the technicians would use trial and error over days or weeks until they stumbled upon the problem.
So, can anyone suggest a workshop anywhere between Hampshire & Glasgow staffed by experts with experience of solving Doblo DPF non-regeneration problems?
My ELM327 scanner (£30 from Ebay) shows fault code P2002 - "Particulate Trap Efficiency Below Threshold". I cleared the fault code using Easy OBD software, but it came back on within 3 miles.
Reading through this forum I see that the following can prevent the DPF from regenerating:
1. EGR problem.
2. ECU software not upgraded to a version that makes regen less likely to fail.
3. Malfunctioning clutch sensor - car thinks the clutch is engaged so prevents regen.
4. Malfunctioning brake sensor - car thinks brakes are engaged.
5. A problem with injection rates.
6. Non reset of Oil Regeneration Index.
I don't have much faith in the local Fiat dealer. They charged £68 for their last misdiagnosis of "You must change the DPF", which I did at a cost of £530 and it made no difference whatsoever. I feel if I went back there the technicians would use trial and error over days or weeks until they stumbled upon the problem.
So, can anyone suggest a workshop anywhere between Hampshire & Glasgow staffed by experts with experience of solving Doblo DPF non-regeneration problems?
See the post immediately before this one regarding non-DPF regeneration in a 2006 1.9 JTD Doblo. After 2 weeks at the dealer the technician diagnosed that:
1. The No.3 injector was overfuelling.
2. Oil deposits were building up in the inlet manifold.
3. The turbo oil seals were worn.
4. The turbo boost sensor was blocked with carbon deposits
....all of which was causing the DPF to fill up and preventing regeneration.
The technician cleaned out the oil & carbon deposits and replaced the boost sensor at a total cost of £520. This solved the problem. The car drives like a rocket and the DPF regenerates no problems. However he warned that the problem would recur unless the Turbo was replaced (£1,000) and possibly the Inlet manifold & timing belt too (£900) + oil & filter change (£100).
Hope other Doblo owners find this information useful. As for me, I have sold this Doblo on cheaply and have bought a 1.4 Petrol Doblo instead. In fact I don't think I'll ever buy a diesel car again. They are far too complicated nowadays. 19th century petrol-technology for me from now on.
1. The No.3 injector was overfuelling.
2. Oil deposits were building up in the inlet manifold.
3. The turbo oil seals were worn.
4. The turbo boost sensor was blocked with carbon deposits
....all of which was causing the DPF to fill up and preventing regeneration.
The technician cleaned out the oil & carbon deposits and replaced the boost sensor at a total cost of £520. This solved the problem. The car drives like a rocket and the DPF regenerates no problems. However he warned that the problem would recur unless the Turbo was replaced (£1,000) and possibly the Inlet manifold & timing belt too (£900) + oil & filter change (£100).
Hope other Doblo owners find this information useful. As for me, I have sold this Doblo on cheaply and have bought a 1.4 Petrol Doblo instead. In fact I don't think I'll ever buy a diesel car again. They are far too complicated nowadays. 19th century petrol-technology for me from now on.
how much
Yes, that's correct. £520. £405 of that was labour while the technician investigated/educated himself in the mysterious ways of DPF failure problems.
ADAMONTHECOSTA
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Re: "engine failure" warning & lack of power - SUCCESS!!
Joined the forum as I am now a member of the Dodgy Dobby DPF fan club.. Now the owner of a 2006 multi-jet Doblo. I had to share my success story - If you have a socket set, set of spanners and some time please read on as my method might save you a fortune!
As my luck goes, two weeks after buying the car privately, engine light comes on, car goes in to limp mode and engine failure is displayed on screen. Luckily I found a nice mobile mechanic who diagnosed the fault for only £10 - Error code P2002 - Likely cause - DPF. So we reset the fault and went for a drive to find that engine failure and limp mode was being triggered when hitting high revs. So the mechanic spoke to his contact who works at a dealership and the guy said that the only way to go was to replace the DPF and it would cost nearly £1200. Goodness gracious me I said (actually it was more like F**k that!) If I needed a new DPF I would buy one and fit it myself, costing around £450 - your talking 5 bolts a little jiggering and the DPF is off - not rocket science. Anyway, on the off chance and with nothing to loose I decided to have a go a cleaning the DPF myself. I whipped it off which took all of 10 minutes once the car was jacked up. I gave it a thorough flush through with the trusty garden hose, watched all the soot run out then for good measure I poured half a bottle of white spirit in to it, let it soak for a few minutes then thoroughly flushed it through again until water was running clear. I then re-installed the DPF which took another 10 minutes and ALACAZAM!! Car running fine, no engine light, no limp mode, no drama! I got the mechanic to reset the fault code before he left so there was no need to call him out again. I now have a happy Dobby and all is right in the world again - Cost £10 and a little time. I'm not saying this will work for you but it's definitely worth a lash.
Joined the forum as I am now a member of the Dodgy Dobby DPF fan club.. Now the owner of a 2006 multi-jet Doblo. I had to share my success story - If you have a socket set, set of spanners and some time please read on as my method might save you a fortune!
As my luck goes, two weeks after buying the car privately, engine light comes on, car goes in to limp mode and engine failure is displayed on screen. Luckily I found a nice mobile mechanic who diagnosed the fault for only £10 - Error code P2002 - Likely cause - DPF. So we reset the fault and went for a drive to find that engine failure and limp mode was being triggered when hitting high revs. So the mechanic spoke to his contact who works at a dealership and the guy said that the only way to go was to replace the DPF and it would cost nearly £1200. Goodness gracious me I said (actually it was more like F**k that!) If I needed a new DPF I would buy one and fit it myself, costing around £450 - your talking 5 bolts a little jiggering and the DPF is off - not rocket science. Anyway, on the off chance and with nothing to loose I decided to have a go a cleaning the DPF myself. I whipped it off which took all of 10 minutes once the car was jacked up. I gave it a thorough flush through with the trusty garden hose, watched all the soot run out then for good measure I poured half a bottle of white spirit in to it, let it soak for a few minutes then thoroughly flushed it through again until water was running clear. I then re-installed the DPF which took another 10 minutes and ALACAZAM!! Car running fine, no engine light, no limp mode, no drama! I got the mechanic to reset the fault code before he left so there was no need to call him out again. I now have a happy Dobby and all is right in the world again - Cost £10 and a little time. I'm not saying this will work for you but it's definitely worth a lash.
ADAMONTHECOSTA
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Re: "engine failure" warning & lack of power - Solution!
Ok so I wanted to post an update to my success story. So P2002 fault was in fact the DPF on my Dobby 1.9 Multijet clogging up. I have spoken to a few mechanics and tuning experts and found some info on what causes the DPF issues that are all so common. Apparently as the engine and its components wear over time the engine becomes less efficient and in particular the injectors – Long story short, more crud being thrown through the exhaust and DPF’s more likely to get blocked. It is the problem with these cars, yes driving like a granny and going short distances will exacerbate this problem but it’s not the soul cause of a blocked DPF . So what are the solutions? Well my tuning expert reckoned the best course of action was to put on a new DPF and have the car re tuned to reduce injection rate slightly and increase the turbo speed resulting in less crud being blown out and consequently less crap clogging the DPF. Total cost likely around £1500. He did not recommend removing the DPF as MOT testing is becoming more thorough and garages are starting to test for particulate levels. None the less the consensus from all the guys I spoke to is that with this model of car the problem will keep reoccurring regardless of tuning. This info also came from a friend’s mole at a fiat dealership. So I tried cleaning out my DPF at home a couple of times as it’s pretty easy to get off. First time I tried just flushing it with diesel and then water, 2 days before it was clogged again and then I tried soaking it in diesel overnight and then flushing it and it clogged up again. So with nothing to loose and with advice from the local mechanic I drilled out the DPFs internal filters completely which took half hour with a chisel and a very long home made drill bit which I fashioned from some steel rod. All the DPF’s filters removed now and although I have an engine light the car isn’t going in to limp mode and in fact it has considerably more power and is getting better mileage. I’m in Spain so it wont pass it’s ITV (mot) while the engine light is on, I’m just going to have the car remapped so it doesn’t know it has a DPF (Cost roughly £230) and worst ways if they start testing for particulates over here I will just have to buy a DPF (only £170 online) and put it on for the MOT. In my opinion the only way to deal with this issue is to either remove the DPF’s innards and have the car remapped or sell the car which I wouldn’t want to do as it’s just passing a very expensive problem on to somebody else as the guy I bought it from did to me. Now the DPF issue is sorted the Dobby is a lovely car!
Ok so I wanted to post an update to my success story. So P2002 fault was in fact the DPF on my Dobby 1.9 Multijet clogging up. I have spoken to a few mechanics and tuning experts and found some info on what causes the DPF issues that are all so common. Apparently as the engine and its components wear over time the engine becomes less efficient and in particular the injectors – Long story short, more crud being thrown through the exhaust and DPF’s more likely to get blocked. It is the problem with these cars, yes driving like a granny and going short distances will exacerbate this problem but it’s not the soul cause of a blocked DPF . So what are the solutions? Well my tuning expert reckoned the best course of action was to put on a new DPF and have the car re tuned to reduce injection rate slightly and increase the turbo speed resulting in less crud being blown out and consequently less crap clogging the DPF. Total cost likely around £1500. He did not recommend removing the DPF as MOT testing is becoming more thorough and garages are starting to test for particulate levels. None the less the consensus from all the guys I spoke to is that with this model of car the problem will keep reoccurring regardless of tuning. This info also came from a friend’s mole at a fiat dealership. So I tried cleaning out my DPF at home a couple of times as it’s pretty easy to get off. First time I tried just flushing it with diesel and then water, 2 days before it was clogged again and then I tried soaking it in diesel overnight and then flushing it and it clogged up again. So with nothing to loose and with advice from the local mechanic I drilled out the DPFs internal filters completely which took half hour with a chisel and a very long home made drill bit which I fashioned from some steel rod. All the DPF’s filters removed now and although I have an engine light the car isn’t going in to limp mode and in fact it has considerably more power and is getting better mileage. I’m in Spain so it wont pass it’s ITV (mot) while the engine light is on, I’m just going to have the car remapped so it doesn’t know it has a DPF (Cost roughly £230) and worst ways if they start testing for particulates over here I will just have to buy a DPF (only £170 online) and put it on for the MOT. In my opinion the only way to deal with this issue is to either remove the DPF’s innards and have the car remapped or sell the car which I wouldn’t want to do as it’s just passing a very expensive problem on to somebody else as the guy I bought it from did to me. Now the DPF issue is sorted the Dobby is a lovely car!
Re: "engine failure" warning & lack of power - Solution!
And the rest of us can all suck in the particulates that the dpf was there to catch! - sounds like a good idea if you are thinking about others !:bang:
And the rest of us can all suck in the particulates that the dpf was there to catch! - sounds like a good idea if you are thinking about others !:bang:
ADAMONTHECOSTA
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Tell me about it, as a bit of a tree hugger I'm feeling the shame. But I'm between jobs and can't be spending thousands on the car to rectify this DPF problem. If I took this thing to a garage they would start by running diagnostics, then install a new DPF and send me on my way £1000 lighter. It would then clog up again and they would replace it again along side some injectors, mayble a new EGR, maybe a couple of other sensors, probably insist on an oil change while we are at it. Guaranteed I would end up around £2000-£2500 out of pocket after the time and my money they have spent on a trial and error, process of elimination solution. Will likely run this thing for a while and then scrap it...there's no way I would pass this problem on to anybody else.
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