Is DPF issue for 2014 CRD fixed now? - Page 49 - Jeep Garage - Jeep Forum

Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK2 - > Export Grand Cherokee 2011+

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #577  
Old 01-18-2015, 11:23 PM
Benn0's Avatar
Senior Member
 
Join Date: Oct 2013
Location: Brisbane, Australia
Posts: 2,098
Thanks: 104
Thanked 333 Times in 261 Posts
Rep Power: 18738
Benn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond repute
Garage
Re: Is DPF issue for 2014 CRD fixed now?

Well, I thought the oil level thing might have been it, because it seems the MY14s take more oil than the MY13s and earlier (IIRC). So I figured they must have changed the sump or something. But I think the oil level explanation has been pretty much disproved. And if the software fix does work than it seems the problem was the electronics/programming..... that would make sense.

__________________
MY14 Grand Cherokee LTD CRD - ORA2 & QL | Mopar 18" Night Fever Rims & Rock Rails | Chief Recovery Hooks & Sump Skid Plate | STMaxx 275/65R18
Reply With Quote
Sponsored Links
Advertisement
 
  #578  
Old 01-18-2015, 11:24 PM
SNUKE's Avatar
Premium Member
My Jeep: 2014 3.0L WK2
 
Join Date: Jan 2013
Location: Sydney, Aus
Posts: 3,896
Thanks: 138
Thanked 547 Times in 425 Posts
Rep Power: 7430
SNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond repute
Garage
Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Bigskiddy View Post
Actually here's part of it for a laugh, apparently diesel has changed recently, which is causing all the problems...
It used to be a tea cup saucer, now it’s a helicoil.
__________________
I'm just want it for the "shorter headlamps".

MY14 GC Limited, 3.0 CRD, Lux II, Granite Crystal, 18" Wheels, Tubular Side Steps.
Could I get my avatar much larger?
Ordered: July 7 2013 Delivered Nov 25th
Reply With Quote
  #579  
Old 01-19-2015, 02:49 AM
Member
My Jeep: 2014 3.0L WK2
 
Join Date: Nov 2014
Location: Sydney, AU
Posts: 215
Thanks: 4
Thanked 69 Times in 39 Posts
Rep Power: 1077
Steve1307 has a reputation beyond reputeSteve1307 has a reputation beyond reputeSteve1307 has a reputation beyond reputeSteve1307 has a reputation beyond repute
Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Benn0 View Post
And if the software fix does work than it seems the problem was the electronics/programming..... that would make sense.
It would be likely that its a software problem. these things are so complex and everything seem to be controlled directly by the PCM.

There is a fine line between production of NOx (too hot) and production of too much soot (too cold) with all sorts of varying loads and devices affecting the performance of the engine operating at the same time.
Injection profile contantly changes (up to 8 injections per cycle for each injector)
EGR system changes
Turbo vanes move and boost pressure constantly changes
Airflow constantly changing rapidly
Fuel flow contantly changing rapidly
The only thing that stays constant seem to be the fuel pressure (2000 bar)



If it were a sensor fail on the pressure sensor, or the EGR control, or the temp sensors then they would give there own faults.

Seem to remember the "active regen" is triggered when it thinks the DPF is 80% full. No idea how that it calculated, but it probably comes from a pressure sensor.

If the pressure sensor is not calibrated properly it might be well past 80% blocked when setting a regen.

How is the limp mode set off? I'd assume it would have to be doing the active regen first for at least some period of time and having that sequence not working effectively before it then goes into limp mode. Going by the complaints here, the PCM doesn't seem to be doing that.


Some people seem to have mutliple DPF episodes (even with highway running) when others seem to have none? Seems odd?
Could their engine tune be running cooler? this would give more soot.
possibly with EGR valve more closed? lower boost? mind boggling


Being the engineer geek I am, I've ordered a bluetooth OBD dongle, the expensive one from Scan.tool.
Anyone know where get a laptop stand? Should i mount the server rack in the back on the drivers side or the passenger side?
Reply With Quote
  #580  
Old 01-19-2015, 04:33 AM
Twscoot's Avatar
Member
 
Join Date: Jul 2011
Location: Brisbane Australia
Posts: 92
Thanks: 11
Thanked 9 Times in 4 Posts
Rep Power: 2090
Twscoot is on a distinguished road
Re: Is DPF issue for 2014 CRD fixed now?

The NS Pajero when first released had all manner of DPF issues. I know their fix was a software update but can anyone shed any light on specifically what the update did? This might be a clue as to what the Jeep update is trying to achieve?


Sent from my iPad using JeepGarage
Reply With Quote
  #581  
Old 01-19-2015, 07:20 AM
Benn0's Avatar
Senior Member
 
Join Date: Oct 2013
Location: Brisbane, Australia
Posts: 2,098
Thanks: 104
Thanked 333 Times in 261 Posts
Rep Power: 18738
Benn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond repute
Garage
Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Steve1307 View Post
Seem to remember the "active regen" is triggered when it thinks the DPF is 80% full. No idea how that it calculated, but it probably comes from a pressure sensor.
There is a tube going from the back of the dpf to the front and a sensor in between. Some failures seem to be the result of this tube kinking (so the filter probably isn't full, but the sensor is detecting a pressure difference). The active regen should trigger before 80%, I thought it was anything over 40%, but not sure.
__________________
MY14 Grand Cherokee LTD CRD - ORA2 & QL | Mopar 18" Night Fever Rims & Rock Rails | Chief Recovery Hooks & Sump Skid Plate | STMaxx 275/65R18
Reply With Quote
  #582  
Old 01-19-2015, 07:32 AM
Member
My Jeep: 2014 3.0L WK2
 
Join Date: Nov 2014
Location: Sydney, AU
Posts: 215
Thanks: 4
Thanked 69 Times in 39 Posts
Rep Power: 1077
Steve1307 has a reputation beyond reputeSteve1307 has a reputation beyond reputeSteve1307 has a reputation beyond reputeSteve1307 has a reputation beyond repute
Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Twscoot View Post
The NS Pajero when first released had all manner of DPF issues. I know their fix was a software update but can anyone shed any light on specifically what the update did? This might be a clue as to what the Jeep update is trying to achieve?


Sent from my iPad using JeepGarage
Feel like sifting through this 90 page epic?
NS Diesel Particulate Filter - Pajero 4WD Club of Victoria Public Forum

I had a flick through it. It all sounds strangely familiar
50-odd pages of ranting and raving.

Then it appears it was fixed in nearly all cases with an ECU flash called "020085" in May '08 see post (#524 !) and afterwards.
The angry posts die down after that so it must have been effective.

So an ECU flash eventually fixed the issue. Sounds promising


I notice there is also mention of letters received from MMAL and compensation in the form of vouchers for consumer goods and fuel cards.

What are our chances? U think?




Looks like the NS (auto only) had "enclosed" type DPF and the first of the NT model (auto) had a slight different "open?" design and then it was removed from the NT(auto)

It appears it was never fitted to the manual version the NS and it was only fitted on the auto because the auto model could (just) not quite achieve some efficiency rating?
I guess when they got the got this rating achieved on the NT auto model refresh, the DPF was deleted.


Note: 2008 was back in the days of 50ppm sulphur fuel, much worse for DPF's. Now its max 10ppm all the way. ULSD is mandatory for vehicles with DPF.
Reply With Quote
  #583  
Old 01-19-2015, 07:56 AM
SNUKE's Avatar
Premium Member
My Jeep: 2014 3.0L WK2
 
Join Date: Jan 2013
Location: Sydney, Aus
Posts: 3,896
Thanks: 138
Thanked 547 Times in 425 Posts
Rep Power: 7430
SNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond reputeSNUKE has a reputation beyond repute
Garage
Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Steve1307 View Post

I notice there is also mention of letters received from MMAL and compensation in the form of vouchers for consumer goods and fuel cards.

I would go back to a Pajero in a heart beat if the new one comes out with a decent donk. We wanted to simply replace our 2005 Pajero with another. But a new one was basically the same as our old one but with Bluetooth. It's a real shame they didn't do a complete update 6 or so years ago. It will be 19 years old by the time they finally replace the current one.
Lots of spares, will air freight critical parts out of stock, acknowledge and fix problems, and will compensate for dramas. Some other car companies learn few things.
My Sat Nav could never be fixed though (if you complained you got a separate Nav unit).
__________________
I'm just want it for the "shorter headlamps".

MY14 GC Limited, 3.0 CRD, Lux II, Granite Crystal, 18" Wheels, Tubular Side Steps.
Could I get my avatar much larger?
Ordered: July 7 2013 Delivered Nov 25th
Reply With Quote
  #584  
Old 01-19-2015, 08:13 AM
Member
My Jeep: 2014 3.0L WK2
 
Join Date: Nov 2014
Location: Sydney, AU
Posts: 215
Thanks: 4
Thanked 69 Times in 39 Posts
Rep Power: 1077
Steve1307 has a reputation beyond reputeSteve1307 has a reputation beyond reputeSteve1307 has a reputation beyond reputeSteve1307 has a reputation beyond repute
Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Benn0 View Post
There is a tube going from the back of the dpf to the front and a sensor in between. Some failures seem to be the result of this tube kinking (so the filter probably isn't full, but the sensor is detecting a pressure difference). The active regen should trigger before 80%, I thought it was anything over 40%, but not sure.
The 80% figure i found in "user guide" (7th edition) for the USA version, and the "Diesel supplement" also for the USA version
Jeep Grand Cherokee WK2 - Brochures, manuals and literature scroll almost to the bottom

this is the page on the DPF - sorry it's a lot of text.
Quote:
Originally Posted by manual - diesel supplement
Your vehicle has the ability to alert you to additional
maintenance required on your vehicle or engine. Refer to
the following messages that may be displayed on your
Electronic Vehicle Information Center (EVIC):
• Exhaust Filter XX% Full Safely Drive at Highway
Speeds to Remedy — This message will be displayed
in the Electronic Vehicle Information Center (EVIC) if
the exhaust particulate filter reaches 80% of its maximum
storage capacity. Under conditions of exclusive
short duration and low speed driving cycles, your
diesel engine and exhaust after-treatment system may
never reach the conditions required to cleanse the filter
to remove the trapped PM. If this occurs, the “Exhaust
Filter XX% Full Safely Drive at Highway Speeds to
Remedy” message will be displayed in the EVIC. If
this message is displayed, you will hear one chime to
assist in alerting you of this condition. By simply
driving your vehicle at highway speeds for up to 20
minutes, you can remedy the condition in the particulate
filter system and allow your diesel engine and
exhaust after-treatment system to cleanse the filter to
remove the trapped PM and restore the system to
normal operating condition.
• Exhaust System — Regeneration In Process Exhaust
Filter XX% Full — This message indicates that the
Diesel Particulate Filter (DPF) is self-cleaning. Maintain
your current driving condition until regeneration
is completed.
• Exhaust System — Regeneration Completed — This
message indicates that the Diesel Particulate Filter
(DPF) self-cleaning is completed. If this message is
displayed, you will hear one chime to assist in alerting
you of this condition.
• Exhaust Service Required — See Dealer Now — This
messages indicates regeneration has been disabled due
to a system malfunction. At this point the engine
Powertrain Control Module (PCM) will register a fault
code, the instrument panel will display a MIL light.

I know the USA model is different, and they also have a "tank of piss" which is injected into the exhaust system to neutralise any NOx.

We don't have that, so i guess ours just fiddle with the EGR to limit NOx production.


OK so the kinked tube (from that guys facebook post) is a plausible cause.
I wonder how it got damaged. The tubing (2 pieces) is rigid metal and is up on top so pretty well protected.

The higher oil level is debunked. (Although this did happen with the CX-5 and some Cummins engines)


Most everything else points to the software.
Reply With Quote
  #585  
Old 01-19-2015, 12:59 PM
Twscoot's Avatar
Member
 
Join Date: Jul 2011
Location: Brisbane Australia
Posts: 92
Thanks: 11
Thanked 9 Times in 4 Posts
Rep Power: 2090
Twscoot is on a distinguished road
Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by SNUKE View Post
I would go back to a Pajero in a heart beat if the new one comes out with a decent donk. We wanted to simply replace our 2005 Pajero with another. But a new one was basically the same as our old one but with Bluetooth. It's a real shame they didn't do a complete update 6 or so years ago. It will be 19 years old by the time they finally replace the current one.
Lots of spares, will air freight critical parts out of stock, acknowledge and fix problems, and will compensate for dramas. Some other car companies learn few things.
My Sat Nav could never be fixed though (if you complained you got a separate Nav unit).
Ditto.


Sent from my iPod touch using JeepGarage
Reply With Quote
  #586  
Old 01-19-2015, 05:44 PM
Benn0's Avatar
Senior Member
 
Join Date: Oct 2013
Location: Brisbane, Australia
Posts: 2,098
Thanks: 104
Thanked 333 Times in 261 Posts
Rep Power: 18738
Benn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond repute
Garage
Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Steve1307 View Post
The 80% figure i found in "user guide" (7th edition) for the USA version, and the "Diesel supplement" also for the USA version.
Yeah, that says that if you never drive at highway speeds (ie. conditions that allow the active regen to occur) then you will be notified to drive at highway speeds when the filter is 80% full. But if your regen is 50% full and you are driving at highway speeds, then an active regen should trigger. Point is if you do lots of highway driving and the regen is working properly, you should never get to 80% full.
__________________
MY14 Grand Cherokee LTD CRD - ORA2 & QL | Mopar 18" Night Fever Rims & Rock Rails | Chief Recovery Hooks & Sump Skid Plate | STMaxx 275/65R18
Reply With Quote
  #587  
Old 01-19-2015, 05:57 PM
Bigskiddy's Avatar
Member
My Jeep: 2014 3.0L WK2
 
Join Date: May 2013
Location: Sydney - Australia
Posts: 654
Thanks: 99
Thanked 114 Times in 84 Posts
Rep Power: 2005
Bigskiddy is on a distinguished road
So has anyone had the filter say it is actually full?

Mine said that the filter was "nearing" full. So I would take it that it isn't full.

Looks like our Aus GC's don't display % like the yank's.

It would appear that engine has tried to do an 'active' regeneration, but this has upset something and caused the MIL and put it into Limp mode.

So hopefully the mentioned PCM update will address it.

Narellan are taking their sweet arse time with my car. Apparently they can't even give me a definitive time when they will have an opportunity to look at it.

I'm not their favorite customer after I told them I took my car to a mechanic for the 30,000km service as the 20,000km was beyond their capabilites.

I know a lot of people on here love Narellan, but I can't stand them. Maybe they'll redeem themselves, but I'm not hopeful.
Reply With Quote
  #588  
Old 01-19-2015, 08:48 PM
Benn0's Avatar
Senior Member
 
Join Date: Oct 2013
Location: Brisbane, Australia
Posts: 2,098
Thanks: 104
Thanked 333 Times in 261 Posts
Rep Power: 18738
Benn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond repute
Garage
Re: Is DPF issue for 2014 CRD fixed now?

Well this one was an Oz car, I always thought it was the yank cars that don't show the percentage cleared:



I think there have been some software changes, so perhaps newer Oz cars don't show this anymore. I remember reports that some cars have different wording for the 80% filter full now, instead of saying travel at highway speeds, it just says something along the lines of keep driving.....
__________________
MY14 Grand Cherokee LTD CRD - ORA2 & QL | Mopar 18" Night Fever Rims & Rock Rails | Chief Recovery Hooks & Sump Skid Plate | STMaxx 275/65R18
Reply With Quote
Reply

Tags
2014

Thread Tools
Display Modes

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
' SERV 4WD' beach driving issue fixed?? (TSB in) UNCjeepWK2 Grand Cherokee - WK2 - 6 04-30-2013 11:19 PM
2014 Grand Cherokee CRD / 2014 Touareg CRD LJS8510 Diesel Powered 2012+ Export Grand Cherokee 6 04-12-2013 12:19 AM
RHR 730 with CHR550 - backup camera issue fixed lakercr Audio/Visual/Navigation 24 02-16-2013 04:11 PM
'04 WJ 2.7 CRD not starting - SKIM or other issue?? arievanbekkum Troubleshooting/Problems 22 01-27-2013 08:06 AM
Heater issue on 2005 GC CRD. Surfer01 Troubleshooting/Problems 5 01-02-2013 05:51 AM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 08:54 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by FCA US LLC. Chrysler, Dodge, Jeep, Ram, Mopar and SRT are registered trademarks of FCA US LLC.