Just rang my dealer, posing as a trader. He has told me that all Fiat Coma Diesels are worth 32% of there original list price after 3 years and 30,000 miles. If its a petrol version then 26% after 3 years and 30,000 miles.

This is from the November 2008 edition of Glass's Guide.

Thanks FFF.

So "my" one will be worth low 7000s in a year's time. Hmm. 8.5k sounds a reasonable start then, but I wouldn't buy it without at least 500 quid off and a decent trade in for my Stilo.

Going on that info, wisebuyers are way down on reality, also whatcar seem to be quoting next year's value now.

Well if they are really that cheap I may buy up all the stock of available cars. I wouldn't part with ours for under £8k. Seriously - there's nothing close to level of spec and quality of vehicle.

Agree Hellcat. Cos I will try and by a 57 plate one in 18 months time.

I'd almost be willing to take a LHD hit to get a new style Croma.. but cars in Italy are SOO expencive!

Not sure DPF = lower CO is correct. To my knowledge the Croma DPF is a non catalyser DPF and therefore only traps soot to be later burnt.

Interestingly (http://www.euractiv.com/en/transport/euro-5-emissions-standards-cars/article-133325) Euro 5, Jan 2009 makes DPF filter compulsory, but prior to that they were not.

Fiat were early adopters of DPF with their vehicles, including the Croma, so I'm pretty sure it will be possible to pass existing diesel MOT levels with NO DPF fitted. This means that one could possibly remove the DPF completely and replace with a standard middle box or a straight through pipe.

I see loads of 2005 diesel cars, Audi, VW, Merc etc. spewing soot under load but never a 2005 Croma, Multipla or Panda.

Now unless the MOT limits specifically target and set levels for individual cars, which they have never done in the past and would be very difficult and complex to do, then the levels with be as per Euro 4 or Euro 5 BASED on year of applicability. Croma is Euro 4 era but should easily pass Euro 5.

Any MOT testers out there care to comment?

ECU / engine should not be affected by no DPF and there will be no pressure differential created and thus no regeneration cycles requested (based on pressure). Oil change interval which is partly based on number of regen cyles will at worst just default to 18K miles.

Nick /////

Hellcat said:

I'd almost be willing to take a LHD hit to get a new style Croma.. but cars in Italy are SOO expencive!

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loads cromas in Italy, great seeing them.bit common actually

T14086 said:

loads cromas in Italy, great seeing them.bit common actually

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I was meaning the facelift new croma. :yum:

///// said:

ECU / engine should not be affected by no DPF and there will be no pressure differential created and thus no regeneration cycles requested (based on pressure). Oil change interval which is partly based on number of regen cyles will at worst just default to 18K miles.

Nick /////

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The trick will be how to fool the pressure sensors into not seeing the zero differential and thus showing a fault - any ideas?

DPF = higher CO2 figure. Any restrictive device in the exhaust will increase fuel consumption and thus increase CO2 emissions, they are linked. Now if I can de-DPF my car and use less fuel then that works for me..!

Dead easy. Join the two sensor tubes/pipes together. Or just blank/plug them. Joining together as this will always be zero differential. Blank/plug could lead to a differnetial pressure when the trapped air in one tube expands/contracts more than in the other due to different background temperatures around them.

Best / cleanest solution would be to remove the pipe completely from the underside of the car (thus hiding what you have done) and just loop the two sensor ports together inside the engine compartment with a short tube.

Nick /////

///// said:

Dead easy. Join the two sensor tubes/pipes together. Or just blank/plug them. Joining together as this will always be zero differential. Blank/plug could lead to a differnetial pressure when the trapped air in one tube expands/contracts more than in the other due to different background temperatures around them.
Nick /////

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Sorry, I'm obviously confused here - won't the sensors always be looking for a positive differential, which is below a certain value? What I was meaning is this:- will a zero differential be registered as a fault / sensor failure / DPF failure by the system? If not, then your suggestion about joining them would seem a sound idea. I'm not planning to do this unless something happens to my DPF..!

I see/understand what you are asking. Don't know the answer but I would have thought that zero differential would be OK. If I were designing the system then I would count zero to medium postive pressure (a pressure well below clogging and recoverable by regeneration) as normal working. High pressure as clogged and dealer forced regen required, and Very high as an error.

Very high would be DPF filter totally stuffed or low pressure tube disconnected.
A large negative pressure indicating the high pressure tube disconnected.

The extremes values make easy and safe debug decision. Looking for a low postive running pressure migh be a little more troublesome. What are the low positive pressure window values? Brand new DPF filter would be low. What about an aftermarket/OEM replacement filter? No two designs or even final manaufactured part will be identical so I would avoid relying on measuring low pressure values for fault indication.

Just my opinion. One way to prove is to get somebody to disconnect the tubes and see of the car throws a fault. I could do this and reset the fault but, like you, not until I need to

The Croma I fancy is now down to 7995 from 8495. Maybe a call to a desperate salesman on Christmas Eve? Offer 6k? :devil:

Yes, "flash the cash".
Just had another regen, under 500 miles this time. I reckon about .5 litre wasted.
The 2.4 seriously should have Fiat UK remapping it with the new new Croma map, which is being quoted on Italiaspeed as more economical.

Alan

6k seems a good harsh offer, but he may take you for a ride with your Stilo! ie not getting anything near you want for it,

FiatFleetFamily said:

Alan

6k seems a good harsh offer, but he may take you for a ride with your Stilo! ie not getting anything near you want for it,

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Yep, I would be concerned about that. Recently stuck 4 new tyres and a new battery on it too, so not too keen to waste that 400-odd quid. Still mighty tempted though. I think if he would do 3k cost to change, I'd go for it.