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[Jimbob]

On the Zafira, DPF regens have occured / been noticed 'occasionally'

Ove the last month or 2, they have happened at the same place on my way home from work, roughy every 6-700 miles, bizarrely about 70 miles into the tankful.

Im sure it never used to happen this often, I know it has done it 3 times, over the last 3 tanks of fuel.  maybe more.

This doesnt sound right, car usage hasnt changed, maintenance hasnt changed, used same garage.

Car now at 95k ish.

Any ideas?  anyone de-dpf'd?  ease / legalities / programming?

[Crazycarzowner]

Not allowed to de-DPF anymore as new MOT regulations came into effect I think in December 2014 

https://www.gov.uk/government/news/new-rules-for-mot-to-test-for-diesel-particulate-filter

[omegod]

I'm sure they can be " emptied " but the casing left in situ then it's deleted from the ecu, similar to cat

[STEMO]

Round here, we've got a friendly mechanic and a friendly mot tester. 

Jimbob..usage or maintenance might not have changed, but after 95K I'll bet the filter has. They don't last forever.

[STEMO]

Found this on Hypermiler:

How long should a DPF last?

The lifespan of a DPF is very hard to determine. There are many factors to take into account however we would hedge our bets on expecting a DPF for the average motorist to last in excess of 70k miles from new. For the occasional city driver this maybe considerably sooner due to increased soot levels and the ability for the DPF to regenerate under normal driving conditions.

http://www.hypermiler.co.uk/technical/the-diesel-particulate-filter-dpf-faq

[Webby the Bear]

Also, worth finding out if you have dpf fluid and whether it's low or not (though I think it throws a code if it does). I on,y found out about this fluid the other day on a shitroen.

[ronnyd]

Also, worth finding out if you have dpf fluid and whether it's low or not (though I think it throws a code if it does). I on,y found out about this fluid the other day on a shitroen.

Future DIL has a C5, this has DPF issues from time to time but it has just passed it,s MOT this week. The removal of the item  was mooted but not taken up on. They live in the North East.

[Viral_Jim]

I believe you can remove dpf, use a hammer and metal rod to empty it by breaking the core then put it back and have someone code it out on the ecu.

However, I would say it creates a very negative environmental effect in terms of emissions. If that bothers you.

[serek]

Also, worth finding out if you have dpf fluid and whether it's low or not (though I think it throws a code if it does). I on,y found out about this fluid the other day on a shitroen.

no fluid on 1.9 cdti engines , dry dpf

[serek]

On the Zafira, DPF regens have occured / been noticed 'occasionally'

Ove the last month or 2, they have happened at the same place on my way home from work, roughy every 6-700 miles, bizarrely about 70 miles into the tankful.

Im sure it never used to happen this often, I know it has done it 3 times, over the last 3 tanks of fuel.  maybe more.

This doesnt sound right, car usage hasnt changed, maintenance hasnt changed, used same garage.

Car now at 95k ish.

Any ideas?  anyone de-dpf'd?  ease / legalities / programming?

would say get check what condition is your DPF with tech2 or other diagnostic tool, maybe force regeneration
that should help for some time

[Webby the Bear]

Also, worth finding out if you have dpf fluid and whether it's low or not (though I think it throws a code if it does). I on,y found out about this fluid the other day on a shitroen.

no fluid on 1.9 cdti engines , dry dpf

Ah ok. Thought it may be worth mentioning 

[Jimbob]

Cheers all, some good food for thought there, laptop on charge to see what the com of op reports for the dpf, sure it has a remaining life percentage, but whether its reported correctly is another matter.

Why would a force regen help when it does it itself often enough?  I accept it may, but the logic defeats me currently?

[Jimbob]

Any MOT Testers care to say how they are checked?  to my knowledge removal is smashing the innards out and a reprog rather than replaing with plain pipe?

[Jimbob]

If to be beleived this looks ok :

Engine Oil Change Warning   Inactive
Remaining Oil Life   65%
Engine Oil Change Warning (Time)   Inactive
Remaining Oil Life   66%
Engine Oil Change Warning (Driving Cycles)   Inactive
Remaining Driving Cycles   94%
Engine Oil Change Warning (Cold-Start Cycles)   Inactive
Remaining Cold-Start Cycles   93%
Engine Oil Change Warning (Distance)   Inactive
Remaining Distance   65%
Engine Oil Change Warning (Soot- Weighted Crankshaft Revolutions)   Inactive
Remaining Soot-Weighted Crankshaft Revolutions   75%
Engine Oil Change Warning (DPF Regenerations)   Inactive
Remaining DPF Regenerations   67%

[Jimbob]

and for completeness  : (Im not sure 26% satuartion in 145km is right....unless dpf not fully regenning?)

Battery Voltage   14.2 V
Ignition Status   On  12V
Starter Relay   Inactive
Fuel Pump Relay   Active
APP at Idle Position (Accelerator Pedal Position)   Active
APP Sensor 1 (Accelerator Pedal Position)   0.96 V
APP Sensor 2 (Accelerator Pedal Position)   0.47 V
Calculated Pedal Position   0%
Desired Engine Idle Speed   800 RPM
Engine Speed   801 RPM
Camshaft Speed   400 RPM
Idle Speed Modified   No
Calculated Air Flow   42 kg/h
Mass Air Flow Sensor   49 kg/h
Ambient Temperature   6 °C
Charge Air Temperature   40 °C
Charge Air Temperature   2.46 V
Coolant Temperature   62 °C
Coolant Temperature   2.07 V
Oil Level   Normal
Oil Pressure   Normal
Engine Oil Level Status   Okay
B1S1 Exhaust Gas Temperature (Bank 1 Sensor 1)   88 °C
B1S1 Exhaust Gas Temperature (Bank 1 Sensor 1)   1.0 V
B1S2 Exhaust Gas Temperature (Bank 1 Sensor 2)   72 °C
B1S2 Exhaust Gas Temperature (Bank 1 Sensor 2)   1.0 V
Barometric Pressure   102 kPa
Barometric Pressure   4.00 V
Boost Pressure Command   104 kPa
Boost Pressure   102 kPa
Boost Pressure   1.64 V
Pulse Ratio Boost Pressure Solenoid Valve   59%
EGR Position Commanded (Exhaust Gas Recirculation)   100%
EGR Pulse Ratio (Exhaust Gas Recirculation)   4%
Swirl Level Control Solenoid Valve Pulse Ratio   89%
Throttle Position PWM Servo Signal   5%
Desired Common Rail Fuel Pressure   27.42 MPa
Common Rail Fuel Pressure   28.13 MPa
Common Rail Fuel Pressure   1.11 V
Rail Pressure Control Solenoid Valve PWM   0%
Rail Pressure Control Solenoid Valve Current   0.00 a
Fuel Metering Solenoid Valve PWM   36%
Fuel Metering Solenoid Valve Current   1.40%
Fuel Temperature   18 °C
Fuel Temperature   3.40 V
A/C Information Switch   Active
A/C Cutoff Mode (Air Conditioning)   System OK
A/C Pressure (Air Conditioning)   1.095 kPa
A/C Pressure (Air Conditioning)   1.6 V
A/C Relay (Air Conditioning)   Active
Brake Switch 1   Inactive
Brake Switch 2   Inactive
Clutch Switch   Active
Vehicle Speed   0 km/h
Vehicle Speed in Cruise Control Range   Inactive
Vehicle Acceleration   0.0 m/s2
Cruise Control Tip Switch   Inactive
Cruise Control   Inactive
Engine Torque   17 Nm
Torque Control   Inactive
Requested Torque (Traction Control)   0 Nm
Remaining Oil Life   65%
Engine Oil Change Warning   Inactive
Malfunction Indicator (MI)   Off
Service Vehicle Soon (SVS) Indicator   Off
Glow Time Relay   Inactive 12V
Glow Time Telltale   Off 12V
Diagnosis Glow Time Relay   Active
Main Injection Timing   0.0 °CA
Final Fuel Injection Amount   8.6 mm3/stk
Differential Pressure Diesel Particulate Filter   -2 kPa
Differential Pressure Diesel Particulate Filter   0.41 V
Diesel Particulate Filter Saturation   26%
Dist. Since Last DPF Regeneration (Distance)   145 km
DPF Regeneration   0%
Odometer Value   152.724 km
Tank Sensor   0.00 V
Fan Control 1   Inactive
Fan Control 2   Inactive
Fan Control 3   Inactive