Technical 1.3 problem with diesel and pdf

[billakoss]

Have fiat 500 multijet 75Ps. Has a problem concretely each 300km while the consumption they is in the eg 3,5 L/100km suddenly it went in the 15 for 5-6km. They do not have any program of upgrade here in the delegation, what we can make. When it makes him this smells the cabin in oil burned.
These said to us that they is problem in the brain other they cannot do something. Him it has faced this no other?
* Certain times it turns on the alarm filter pdf
Thanks

 

[rallycinq]

Hi,

I presume english is not your first language.

The pdf needs to purge regularly, and it does this by injecting neat fuel into the pdf to burn of the particles.

This will show as increased fuel consumption for a short while, with a burning smell. This is normal.

It will only happen if you make lots of short journeys. Take a long trip every week, with the engine above 2500 rpm for 20 minutes.

Cheers

PD

 

[T14086]

software update available at dealership

 

[rallycinq]

software update available at dealership

Or, 'thrash it'!!

Cheers

PD

 

[T14086]

not everyone has lovely country roads like us though & are stuck in slow moving city traffic

 

[The Sultan]

Or, 'thrash it'!!

Cheers

PD

it's called a d p f diesel particulate filter

thrashing it around will make matters worse as it will put more soot into the filter not less

the car needs to be run on the motorway or dual carriageway once every few weeks at a constant steady speed for a prolonged period of time only then will the ecu back down the turbo and start injecting post combustion injections to light in the cat and heat up the filter to 6 or 700 degrees

under normal running the filter will never reach more than 250 or so degrees
things that will stop the ecu clearing out the trap are full throttle as it will stop post injections and give you full power witch will in fact do the opposite to what you would think and bring the temprature in the exhaust down again

had to do a doblo at work the other day

took it out and covered 20 miles at 70mph on dual carriage way made no sudden throttle movements and low and behold the examiner showed the temprature in the exhaust rising and also showed post injections

it reached 648 degrees a little lower than we were exspecting

but it did the job it brought an 84 percent blocked filter back down to 14 percent blocked

if you don't ever visit these speeds then a diesel car with particulate filter fitted like all modern diesels do now is not the car for you get a petrol

and as dave said there are software updates available but they will make no difference as i have said if you never get out the town