Register Login
Shop4Parts - UK's largest online superstore for FIAT and Alfa Romeo parts
Reply
 
Thread Tools
Old 24-10-2016   #1
Join Date: Apr 2016
Posts: 11
Thanks: 0
Trader Rating: 0
Slovenia 
DPF clogging.... need help

I have Punto EVO 1.3 55kW with DPF (euro5) and recently i have a lot of DPF problems. First time i had check engine and limp mode i took it to the shop and they read dpf clogged, they tried with forced regen but it failed. They've changed one rubber pipe and clean it with some additive (200). It worked for about 3000km and again same problem. This time they had it for 2 days, apparently they clean it and reset it as new (300). Now after about 1 month (probably also 3000km) i again got check engine light. Its funny cuz i drive mixed, city and highway and the light for DPF never come on. Never any worning that it need some regeneration, just limp mode and check engine, when its basically too late. Anybody has any idea what could be? It stared after i made big service at 130k km, so im thinking bad oil or EGR?

Thank you in advance.
Likes varesecrazy liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides


Last edited by janko; 24-10-2016 at 13:13.
janko is offline Reply With Quote Quote 
Old 25-10-2016   #2
Join Date: Apr 2011
Location: Near the M4
Posts: 20,140
Thanks: 720
Trader Rating: 0
varesecrazy has donated!
United Kingdom 
Re: DPF clogging.... need help

Hi.
Are you resetting the oil degradation counter..??

Will not run correctly without.
Charlie
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

varesecrazy is offline Reply With Quote Quote 
Old 26-10-2016   #3
Join Date: Apr 2016
Posts: 11
Thanks: 0
Trader Rating: 0
Slovenia 
Re: DPF clogging.... need help

Thank you for your reply. I dont know for that, but i think mechanic resets it when he makes regular service. I took it to mechanic again and again payed 300€ He changed thermostat (apparently it was always open) and we also changed oil to selenia and clean clogged dpf. Will let you know if this was the solution (i hope it is).
Likes varesecrazy liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

janko is offline Reply With Quote Quote 
Old 26-10-2016   #4
Became old and sensible
 
MrDerv's Avatar
Join Date: Aug 2003
Location: Durham
Posts: 2,664
Thanks: 21
Trader Rating: 0
MrDerv has donated!
United Kingdom 
Re: DPF clogging.... need help

Dodgy thermostat could have been the cause of it clogging if it's preventing the engine from getting to operating temperature. I had to replace the thermostat on my last car for this very reason.

DPF regen on most diesel cars won't take place til the coolant temp reaches at least 75 deg C (along with other parameters such as minimum vehicle speed). If the thermostat is stuck open, it won't reach normal operating temp, thus clogging as no regen is taking place.

Hopefully that should sort your issue.
Likes janko, varesecrazy liked this post
__________________
Current Garage
Mine: 2013 VW Passat Sport BlueMotion Tech 2.0 TDI Stage 2 Mapped
Hers: 2007 Renault Megane 1.6 VVT Auto Dynamique


Last edited by MrDerv; 26-10-2016 at 09:03.
MrDerv is offline Reply With Quote Quote 
Old 27-11-2016   #5
Join Date: Sep 2012
Posts: 207
Thanks: 43
Trader Rating: 0
United Kingdom 
Re: DPF clogging.... need help

Get rid of your dpf and have dpf and egr deleted from your ecu. It's the two things that wreck modern diesels. I hate both of them. Good cars get wrecked and go to scrap yards because of these two. Governing bodies should be focused on mpg because if that goes up then emissions come down per mile. Dpf and egr are great on paper but in real world they just don't work properly and cause huge amounts of problems for all the manufacturers
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

burrowsdeano is offline Reply With Quote Quote 
Old 27-11-2016   #6
Moderator
 
g8rpi's Avatar
Join Date: Nov 2013
Location: Cambridge
Posts: 4,076
Thanks: 411
Trader Rating: 0
g8rpi has donated!
United Kingdom 
Re: DPF clogging.... need help

Quote Originally Posted by janko View Post
Thank you for your reply. I dont know for that, but i think mechanic resets it when he makes regular service. I took it to mechanic again and again payed 300 He changed thermostat (apparently it was always open) and we also changed oil to selenia and clean clogged dpf. Will let you know if this was the solution (i hope it is).
You need to be SURE the mechanic has reset the oil degredation counter in the engine ECU. This is in addition to the service reset. He will need Fiat specialist software (Multiecuscan, AlfaOBD or Fiat Examiner) to do this. Without this reset you will continue to get DPF issues.

Robert G8RPI.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

g8rpi is offline Reply With Quote Quote 
Old 27-11-2016   #7
Moderator
 
g8rpi's Avatar
Join Date: Nov 2013
Location: Cambridge
Posts: 4,076
Thanks: 411
Trader Rating: 0
g8rpi has donated!
United Kingdom 
Re: DPF clogging.... need help

Quote Originally Posted by burrowsdeano View Post
Get rid of your dpf and have dpf and egr deleted from your ecu. It's the two things that wreck modern diesels. I hate both of them. Good cars get wrecked and go to scrap yards because of these two. Governing bodies should be focused on mpg because if that goes up then emissions come down per mile. Dpf and egr are great on paper but in real world they just don't work properly and cause huge amounts of problems for all the manufacturers
DPF and EGR are there to reduce particulate and NOx emissions. and do so significantly, much more than the simple percentage that improving MPG might make. Note I say might make, some MPG improvements increase NOx emissions. The only simple emissions / MPG relationship is CO2.
Anyone contemplating deletion of emissions controls should check their local laws as in most countries it makes the car illegal to use on the road. The level of enforcement varies as well.

Robert G8RPI.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

g8rpi is offline Reply With Quote Quote 
Old 27-11-2016   #8
Join Date: Sep 2012
Posts: 207
Thanks: 43
Trader Rating: 0
United Kingdom 
Re: DPF clogging.... need help

Well my opinion stands, egr is not so bad but dpf does not work in real world conditions. If you've ever seen a forced regeneration of the dpf will see that there is great amounts of soot released when this is done. It's ment to burn it off on a re-gen but simply doesn't work. Why collect it all over a period of time only to deposit most of it in one go when it does a regeneration
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

burrowsdeano is offline Reply With Quote Quote 
Old 27-11-2016   #9
Moderator
 
g8rpi's Avatar
Join Date: Nov 2013
Location: Cambridge
Posts: 4,076
Thanks: 411
Trader Rating: 0
g8rpi has donated!
United Kingdom 
Re: DPF clogging.... need help

Hi,
I don't want to get into an argument, but would point out thet a forced regeneration is not normal operation of a DPF. When my 1.9 16V Croma does a normal regeneration there is no noticeable smoke produced.

Robert G8RPI.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

g8rpi is offline Reply With Quote Quote 
Old 27-11-2016   #10
Join Date: Sep 2012
Posts: 207
Thanks: 43
Trader Rating: 0
United Kingdom 
Re: DPF clogging.... need help

Personal preference but when you see so many problems with them. The question has to ba asked is it all worth it for the small gain
Likes janko, SB1500 liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

burrowsdeano is offline Reply With Quote Quote 
Old 27-11-2016   #11
Join Date: Dec 2015
Posts: 275
Thanks: 8
Trader Rating: 0
Thefox has donated!
United Kingdom 
Re: DPF clogging.... need help

Make sure fuel level is above 20%. Dpf regen will not happen if fuel level below this.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Thefox is offline Reply With Quote Quote 
Old 28-11-2016   #12
Join Date: Jul 2014
Location: Northern Ireland
Posts: 2,509
Thanks: 60
Trader Rating: 0
SB1500 has donated!
United Kingdom 
Re: DPF clogging.... need help

My uncles new Yaris is spending most of its time at the dealer due to the same sort of issues.. can anyone explain how this DPF and EGR works?
__________________
2017 Fiat Panda Easy 1.2 - 21,050 miles
2005 Fiat Panda Dynamic 1.2 - 153,700
SB1500 is offline Reply With Quote Quote 
Old 28-11-2016   #13
Moderator
 
g8rpi's Avatar
Join Date: Nov 2013
Location: Cambridge
Posts: 4,076
Thanks: 411
Trader Rating: 0
g8rpi has donated!
United Kingdom 
Re: DPF clogging.... need help

Quote Originally Posted by SB1500 View Post
My uncles new Yaris is spending most of its time at the dealer due to the same sort of issues.. can anyone explain how this DPF and EGR works?
Quick answer:
DPF is typically (there are variations) a combination filter and catalyst consisting of a ceramic core with fine holes plated with precious metal. Soot is captured and if the DPF is hot enough is catalytically "burned" to produce CO2. Some cars (Citroen?) have a fuel additive (automatically added, not AdBlue) that helps this. If the DPF does not burn all the soot in normal driving this is sensed (pressure difference) and fuel is injected into the exhaust system (in Fiats by opening the injectors during the exhaust stroke) to increase the temperature. This is called regeneration. With the exhaust stroke injection method, fuel can get into the engine oil so oil changes and regenerations are monitored by the ECU and regeneration is stooped if the oil has not been changed ( or recorded as changed, a separate process to service reset for Fiats).


EGR is a valve which allows exhaust gas into the engine inlet under certain engine conditions. this reduces the combustion temperature and lowers NOx emissions. Being replaced by Selective Catalyst Reduction (SCR) on newer engines. SCR requires AdBlue.


Robert G8RPI.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

g8rpi is offline Reply With Quote Quote 
Old 28-11-2016   #14
Join Date: Dec 2015
Posts: 275
Thanks: 8
Trader Rating: 0
Thefox has donated!
United Kingdom 
Re: DPF clogging.... need help

If you only do short runs then the engine and exhaust temperature will never get high enough to start the regeneration process, once it start the process the engine needs to continue running to complete the process. If most of your journeys are short then you shouldn't have bought a diesel car.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Thefox is offline Reply With Quote Quote 
Old 29-11-2016   #15
Join Date: Apr 2016
Posts: 11
Thanks: 0
Trader Rating: 0
Slovenia 
Re: DPF clogging.... need help

Quote Originally Posted by g8rpi View Post
You need to be SURE the mechanic has reset the oil degredation counter in the engine ECU. This is in addition to the service reset. He will need Fiat specialist software (Multiecuscan, AlfaOBD or Fiat Examiner) to do this. Without this reset you will continue to get DPF issues.

Robert G8RPI.
Thank you for your reply. I think this should be erased every time you change the oil, which i do every 15k km and not 30k km as manual says. And im thinking if this reset can make such a problem, then Fiat ECU and DPF are total hazard :S
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

janko is offline Reply With Quote Quote 
Reply
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump
Similar Threads
Thread Thread Starter Forum Replies Last Post
(T) DPf clogging normal level doblojohn Doblo 14 06-04-2017 21:19
(T) I finally figured out DPF clogging (I think) on 1.9 Multijet martinfr Doblo 2 18-04-2015 16:16
(G) help with EGR clogging redpanther 500 4 29-06-2012 22:42
(T) Grande Punto 1.6 Multijet DPF clogging? anthonyjgoodwin Grande Punto 2 20-03-2012 09:11