DPF - again!

[Sooty torques]

Have covered 21K in my FR 170 TDI and have always driven by the guidelines on the DPF leaflet I picked up when I first collected the car from the stealers. I had read everything on here first too, to make sure I kept the DPF sweet. I have driven the car the same-ish route to and from work everyday for the past 19 months with no problems.

However, was caught out a couple of weeks back and had to fill her up with ASDA diesel - I usually use BP or Esso, occasionally Shell. Last Weds I called in at my usual BP and filled her up. Friday the bleedin' DPF warning light comes on as I drive to work, so I drive miles out of my way (about an extra 30 miles!) along fast A-roads and follow the instructions to the letter.

No effect.

Drive home from work the same way = no effect, though tail-pipe on the zorst is red hot and the gases are hot enough to burn my hand.

So yesterday, decides to take her on the M1 and go for a long blast. Before I even got onto the slip road, the engine management light pings on and seconds later the coil light comes on and she goes into limp mode. So I end up stuck on the M1 for a junction until I can get off and limp home.

I'm not a happy bunny.

Was it the fuel change? Dunno, though it's made me suspicious. Maybe just coincidence...

Need to get to the stealers ASAP in the morning. Maybe time for a long discussion and discourse on the effectiveness of the DPF...

 

[Dave_88]

Have you had it serviced recently?

 

[dannychapman10]

Could be the fuel, I notice a difference if I use Morrisons fuel to my normal Shell Optimax or whatever it's called, my car seems to just not feel as pokey

Danny.

 

[SteveTDCi]

didn't vag remove the warranty on cars filled with morrisons fuel ? something to do with the bio mix of it not being suitable for the TDis ?

 

[Nath.]

My guess is it's a sensor fault and the DPF isn't full at all.

Fingers crossed a new sensor under warrenty will get you going again.

 

[mds1256]

Could be the fuel, I notice a difference if I use Morrisons fuel to my normal Shell Optimax or whatever it's called, my car seems to just not feel as pokey

Danny.

i notice when filling up with JET diesel from the usual shell or total diesel i get DPF regen within 10-15 miles of driving every time i have filled up with JET so i no longer use JET and just stick to TOTAL or SHELL

so it could be fuel but i reakon it is also a sensor issue as meantioned before

 

[Nath.]

Hey Sooty, as you have an FR Derv with a DPF you should change your username to "not so sooty torques" . Never seen an FR Derv making soot yet.

 

[MJ]

Pressure sensors are a common fault on these mate. A replacement and an ecu update is the common fix.

 

[NickP]

Hey Sooty, as you have an FR Derv with a DPF you should change your username to "not so sooty torques" . Never seen an FR Derv making soot yet.

I was pleasantly surprised standing behind mine when it was dyno'd and not the slightest hint of black smoke throughout the entire run

I was also pleasantly surprised with the figures too

 

[MJ]

I was pleasantly surprised standing behind mine when it was dyno'd and not the slightest hint of black smoke throughout the entire run

I was also pleasantly surprised with the figures too

Come on then, share the wealth???

 

[NickP]

Come on then, share the wealth???

Was earlier in the year at AmD
http://www.seatcupra.net/forums/showpost.php?p=2308543&postcount=2

 

[Jace]

The sensors do tend to go around 20k +/-,mine went 18k.



Had her 2 years this weekend & covered 49k in that time period , gave her a special back lane ragging to celebrate

 

[NickP]

Even though I've never had any DPF issues or had the DPF light on in 32k miles, I'm being de-dpf'd shortly

Can have the original Down Pipe with DPF fitted and original software reflashed for £60 if I want to go back to standard at any point or any potential purchaser wants to..

 

[Nath.]

Do you have to have the downpipe replaced?

Can you just have the DPF off and a map to go with that?

 

[NickP]

Do you have to have the downpipe replaced?

Can you just have the DPF off and a map to go with that?

There are two options - having your stock d/p opened up and the dpf removed and re welded, which retains the 'stock' look and is slightly cheaper, but doesn't overcome some of the squashed bends in the original d/p which hamper the gas flow

or the second option which I'm going for, where the original d/p is completely replaced by a milltek large bore downpipe.
This then leaves you with the fully functioning original if you ever need to have it refitted - i.e. resale etc...

 

[dimension_fm]

I mostly use Morrisons fuel and always have done since new, have done 15k in it now and never had a problem with it, my driving is a mixture of town and motorway driving.

 

[OLDOILER]

That is a sensor gone duff, mine happened just has I had paid for the service , so back in again!! done under warranty.

 

[Sooty torques]

Have you had it serviced recently?

Yep, was serviced at about 19K.

 

[Sooty torques]

Hey Sooty, as you have an FR Derv with a DPF you should change your username to "not so sooty torques" . Never seen an FR Derv making soot yet.

Ahhh yes indeed... However the name originated from my old ZX Volcane TD which I had "tweaked" and that really left a soot trail...

 

[Sooty torques]

Even though I've never had any DPF issues or had the DPF light on in 32k miles, I'm being de-dpf'd shortly

Can have the original Down Pipe with DPF fitted and original software reflashed for £60 if I want to go back to standard at any point or any potential purchaser wants to..

Yep, been following other threads on here which talk about having the whole shebang ripped out and like you, having full new system in. Like this. Any news on how this will affect MOT though? I know they measure soot from my 15 years of driving dervs, but will the new system pass the soot test? Do they measure any of the NOX which the DPF/CAT is supposed to sort? I would imagine the soot would pass (seeing as my old Pug 309 and ZX passed) but are any of the other emissions tested under the latest MOT tests?

I'm hoping to keep my FR for a few years yet and don't want to shell out £800-odd notes if it is going to fail the MOT come 2011...