My partner is looking at getting a second-hand diesel Sedici, but as she does mainly local commute driving I'm worried about the possibility of DPF failure. I was wondering whether earlier models may not have had the DPF fitted? I know that at some point the DPF was added to the 1.9 engine, just not sure when.

Seems a shame that the modern diesel engines have lost the rugged reliability of the old ones. My last 3 cars have all been diesels, and I'm a big fan of their economy and performance, but I'm not sure things are headed in the right direction.

for short journey use the petrol version is better; warms up quicker; no cambelt; no DPF; fuel consumption much the same; see mpg posts....

Yes, going for the petrol is a possibility if we can't get a diesel without DPF. Generally prefer diesels, though, because of torque curve, and better overall MPG (although perhaps not around town).

I removed my DPF unit at 12,000 miles - now have reached 18,000 miles without too many ill effects.

ECU reports errors with pressure differential sensor - which makes sense since there is no DPF unit present...

Need to keep an eye on the oil level as it keeps rising (diesel in the sump) and you need to change the oil more often.

Upside is increased fuel economy. Downside the car exhaust smokes on heavy acceleration. However this is not a problem when the car is driven normally....

Another minor downside when the engine does a regeneration you have a really smelly exhaust.

Hope to have my ECU reprogrammed one day to remove the DPF function for good.

Hi,

I've just removed the DPF and will now prepare for the EGR repair/clean.
Can anyone assist me, please, with the resistor values required to 'fool' the ECU from the DPF connector?
Or will a re-mapping of the ECU negate this requirement?

The ECU will need to be reprogrammed otherwise it will go through the re-gen cycle and cause a lot of smoke. I had the re-gen cycle removed.

Removing the EGR valve will eliminate the flat spot at 1800 RPM and save you from cleaning out the manifold in later years from accumulated deposits.

Hi,

As it happened a few hundred miles down the road the smoke began to billow out the back and fill the street. So, I switched off the engine - removed the key and put it back - started up again and the smoke had stopped. Blanking plates were ordered but only 1 arrived. More delay . . .

Johnny2R said:

My partner is looking at getting a second-hand diesel Sedici, but as she does mainly local commute driving I'm worried about the possibility of DPF failure. I was wondering whether earlier models may not have had the DPF fitted? I know that at some point the DPF was added to the 1.9 engine, just not sure when.

Seems a shame that the modern diesel engines have lost the rugged reliability of the old ones. My last 3 cars have all been diesels, and I'm a big fan of their economy and performance, but I'm not sure things are headed in the right direction.

Click to expand...

If the model is badged as a JTD it will not generally have a DPF, if its badged as a Mjet or Multijet it will have a DPF.

As it happens the emissions rule was applied in 2008 so most (if not all) deisels pre 08 won't have the emission controls fitted.

Now that all the work has been done removing all the ridiculous emission controls from the Sedici, it drives perfectly. With nearly 200k on the clock it behaves like a normal car again. There's none of the 'spitting and jerking' caused by the sticky egr valve and the engine management isn't signalling the exhaust flush anymore (so no more smokey).

The egr valve blanking plates worked a treat and I had to get the dpf deleted off the e-prom. Now I will get a power map done and the whole package should perform even better. It is work I would reccommend. DPF and EGR valve cleaning will cost 500 a year (depending on mileage). You may even have to replace these parts. Removing those problems is 500 once only.

The economy fell from 800km per 50 litres to 630km per tankful prior to removing the add-ons. It hasn't really improved since the egr dpf work, but then it 'learns', doesn't it??? It's around 680km per tankful now and it's only a month down the road as a 'normal' engine.

The emission controls do nothing for global consumption of oil, but rather they increase it! More fuel is used to get around and there's an exhaust flush that send litres down the exhaust to clean the dpf . . . you don't even get mileage from it! It's just plain waste!

Diepthane is reccommended too . . .

Well, I haven't posted here for a while, but here's the update in relation to the DPF issues having gone through all of the above. The last thing done was the power mapping for 200 and it worked a treat! There is a huge torque difference complimented by insane acceleration that can get you out of many a tricky situation . . . The dash display is reading 6.1L per 100km which can mean that the engine is running more economically but I am still only getting around 650km per tankful . . . so it's not really converting into more economy. I did however read this posting "Slow starting lumpy tickover (sometimes)" and this is the latest issue that has plagued d'ole FIAT . . . It reminds me of the days driving 128s and Miarafiaroris when Fiat (non)starting was 'in-thing'. Lucky for me I lived on a slope and jump-started the cars each time. That resulted in the 128 front anti-roll bar caving in -another common problem with the 128. Basically they were rust-buckets back then just like the Jap cars of that era. Anyway I digress, the posting above links into the why the fuel economy hasn't improved. So replacment spill pipes are next. And just for wierdness, the mileage (kilometerage?) reads 166,666km . . I checked it just now! (103,561 miles)